Simplify 1/3* square root of 72+1/4* square root of 32-1/2* square root of 72+7/12* square root of 18

$\frac{1}{3} \cdot \sqrt{72} + \frac{1}{4} \cdot \sqrt{32} - \frac{1}{2} \cdot \sqrt{72} + \frac{7}{12} \cdot \sqrt{18}$

Step 1

Simplify each term.

Rewrite $72$ as $6^{2} \cdot 2$ .

Factor $36$ out of $72$ .

$\frac{1}{3} \cdot \sqrt{36 (2)} + \frac{1}{4} \cdot \sqrt{32} - \frac{1}{2} \cdot \sqrt{72} + \frac{7}{12} \cdot \sqrt{18}$

Rewrite $36$ as $6^{2}$ .

$\frac{1}{3} \cdot \sqrt{6^{2} \cdot 2} + \frac{1}{4} \cdot \sqrt{32} - \frac{1}{2} \cdot \sqrt{72} + \frac{7}{12} \cdot \sqrt{18}$

Pull terms out from under the radical.

$\frac{1}{3} \cdot (6 \sqrt{2}) + \frac{1}{4} \cdot \sqrt{32} - \frac{1}{2} \cdot \sqrt{72} + \frac{7}{12} \cdot \sqrt{18}$

Cancel the common factor of $3$ .

Factor $3$ out of $6 \sqrt{2}$ .

$\frac{1}{3} \cdot (3 (2 \sqrt{2})) + \frac{1}{4} \cdot \sqrt{32} - \frac{1}{2} \cdot \sqrt{72} + \frac{7}{12} \cdot \sqrt{18}$

Cancel the common factor.

$\frac{1}{3} \cdot (3 (2 \sqrt{2})) + \frac{1}{4} \cdot \sqrt{32} - \frac{1}{2} \cdot \sqrt{72} + \frac{7}{12} \cdot \sqrt{18}$

Rewrite the expression.

$2 \sqrt{2} + \frac{1}{4} \cdot \sqrt{32} - \frac{1}{2} \cdot \sqrt{72} + \frac{7}{12} \cdot \sqrt{18}$

Rewrite $32$ as $4^{2} \cdot 2$ .

Factor $16$ out of $32$ .

$2 \sqrt{2} + \frac{1}{4} \cdot \sqrt{16 (2)} - \frac{1}{2} \cdot \sqrt{72} + \frac{7}{12} \cdot \sqrt{18}$

Rewrite $16$ as $4^{2}$ .

$2 \sqrt{2} + \frac{1}{4} \cdot \sqrt{4^{2} \cdot 2} - \frac{1}{2} \cdot \sqrt{72} + \frac{7}{12} \cdot \sqrt{18}$

Pull terms out from under the radical.

$2 \sqrt{2} + \frac{1}{4} \cdot (4 \sqrt{2}) - \frac{1}{2} \cdot \sqrt{72} + \frac{7}{12} \cdot \sqrt{18}$

Cancel the common factor of $4$ .

Factor $4$ out of $4 \sqrt{2}$ .

$2 \sqrt{2} + \frac{1}{4} \cdot (4 (\sqrt{2})) - \frac{1}{2} \cdot \sqrt{72} + \frac{7}{12} \cdot \sqrt{18}$

Cancel the common factor.

$2 \sqrt{2} + \frac{1}{4} \cdot (4 \sqrt{2}) - \frac{1}{2} \cdot \sqrt{72} + \frac{7}{12} \cdot \sqrt{18}$

Rewrite the expression.

$2 \sqrt{2} + \sqrt{2} - \frac{1}{2} \cdot \sqrt{72} + \frac{7}{12} \cdot \sqrt{18}$

Rewrite $72$ as $6^{2} \cdot 2$ .

Factor $36$ out of $72$ .

$2 \sqrt{2} + \sqrt{2} - \frac{1}{2} \cdot \sqrt{36 (2)} + \frac{7}{12} \cdot \sqrt{18}$

Rewrite $36$ as $6^{2}$ .

$2 \sqrt{2} + \sqrt{2} - \frac{1}{2} \cdot \sqrt{6^{2} \cdot 2} + \frac{7}{12} \cdot \sqrt{18}$

Pull terms out from under the radical.

$2 \sqrt{2} + \sqrt{2} - \frac{1}{2} \cdot (6 \sqrt{2}) + \frac{7}{12} \cdot \sqrt{18}$

Cancel the common factor of $2$ .

Move the leading negative in $- \frac{1}{2}$ into the numerator.

$2 \sqrt{2} + \sqrt{2} + \frac{- 1}{2} \cdot (6 \sqrt{2}) + \frac{7}{12} \cdot \sqrt{18}$

Factor $2$ out of $6 \sqrt{2}$ .

$2 \sqrt{2} + \sqrt{2} + \frac{- 1}{2} \cdot (2 (3 \sqrt{2})) + \frac{7}{12} \cdot \sqrt{18}$

Cancel the common factor.

$2 \sqrt{2} + \sqrt{2} + \frac{- 1}{2} \cdot (2 (3 \sqrt{2})) + \frac{7}{12} \cdot \sqrt{18}$

Rewrite the expression.

$2 \sqrt{2} + \sqrt{2} - 1 \cdot (3 \sqrt{2}) + \frac{7}{12} \cdot \sqrt{18}$

Multiply $3$ by $- 1$ .

$2 \sqrt{2} + \sqrt{2} - 3 \cdot \sqrt{2} + \frac{7}{12} \cdot \sqrt{18}$

Rewrite $18$ as $3^{2} \cdot 2$ .

Factor $9$ out of $18$ .

$2 \sqrt{2} + \sqrt{2} - 3 \sqrt{2} + \frac{7}{12} \cdot \sqrt{9 (2)}$

Rewrite $9$ as $3^{2}$ .

$2 \sqrt{2} + \sqrt{2} - 3 \sqrt{2} + \frac{7}{12} \cdot \sqrt{3^{2} \cdot 2}$

Pull terms out from under the radical.

$2 \sqrt{2} + \sqrt{2} - 3 \sqrt{2} + \frac{7}{12} \cdot (3 \sqrt{2})$

Cancel the common factor of $3$ .

Factor $3$ out of $12$ .

$2 \sqrt{2} + \sqrt{2} - 3 \sqrt{2} + \frac{7}{3 (4)} \cdot (3 \sqrt{2})$

Factor $3$ out of $3 \sqrt{2}$ .

$2 \sqrt{2} + \sqrt{2} - 3 \sqrt{2} + \frac{7}{3 (4)} \cdot (3 (\sqrt{2}))$

Cancel the common factor.

$2 \sqrt{2} + \sqrt{2} - 3 \sqrt{2} + \frac{7}{3 \cdot 4} \cdot (3 \sqrt{2})$

Rewrite the expression.

$2 \sqrt{2} + \sqrt{2} - 3 \sqrt{2} + \frac{7}{4} \cdot \sqrt{2}$

Combine $\frac{7}{4}$ and $\sqrt{2}$ .

$2 \sqrt{2} + \sqrt{2} - 3 \sqrt{2} + \frac{7 \sqrt{2}}{4}$

Step 2

Find the common denominator.

Write $2 \sqrt{2}$ as a fraction with denominator $1$ .

$\frac{2 \sqrt{2}}{1} + \sqrt{2} - 3 \sqrt{2} + \frac{7 \sqrt{2}}{4}$

Multiply $\frac{2 \sqrt{2}}{1}$ by $\frac{4}{4}$ .

$\frac{2 \sqrt{2}}{1} \cdot \frac{4}{4} + \sqrt{2} - 3 \sqrt{2} + \frac{7 \sqrt{2}}{4}$

Multiply $\frac{2 \sqrt{2}}{1}$ by $\frac{4}{4}$ .

$\frac{2 \sqrt{2} \cdot 4}{4} + \sqrt{2} - 3 \sqrt{2} + \frac{7 \sqrt{2}}{4}$

Write $\sqrt{2}$ as a fraction with denominator $1$ .

$\frac{2 \sqrt{2} \cdot 4}{4} + \frac{\sqrt{2}}{1} - 3 \sqrt{2} + \frac{7 \sqrt{2}}{4}$

Multiply $\frac{\sqrt{2}}{1}$ by $\frac{4}{4}$ .

$\frac{2 \sqrt{2} \cdot 4}{4} + \frac{\sqrt{2}}{1} \cdot \frac{4}{4} - 3 \sqrt{2} + \frac{7 \sqrt{2}}{4}$

Multiply $\frac{\sqrt{2}}{1}$ by $\frac{4}{4}$ .

$\frac{2 \sqrt{2} \cdot 4}{4} + \frac{\sqrt{2} \cdot 4}{4} - 3 \sqrt{2} + \frac{7 \sqrt{2}}{4}$

Write $- 3 \sqrt{2}$ as a fraction with denominator $1$ .

$\frac{2 \sqrt{2} \cdot 4}{4} + \frac{\sqrt{2} \cdot 4}{4} + \frac{- 3 \sqrt{2}}{1} + \frac{7 \sqrt{2}}{4}$

Multiply $\frac{- 3 \sqrt{2}}{1}$ by $\frac{4}{4}$ .

$\frac{2 \sqrt{2} \cdot 4}{4} + \frac{\sqrt{2} \cdot 4}{4} + \frac{- 3 \sqrt{2}}{1} \cdot \frac{4}{4} + \frac{7 \sqrt{2}}{4}$

Multiply $\frac{- 3 \sqrt{2}}{1}$ by $\frac{4}{4}$ .

$\frac{2 \sqrt{2} \cdot 4}{4} + \frac{\sqrt{2} \cdot 4}{4} + \frac{- 3 \sqrt{2} \cdot 4}{4} + \frac{7 \sqrt{2}}{4}$

Step 3

Combine the numerators over the common denominator.

$\frac{2 \sqrt{2} \cdot 4 + \sqrt{2} \cdot 4 - 3 \sqrt{2} \cdot 4 + 7 \sqrt{2}}{4}$

Step 4

Simplify each term.

Multiply $4$ by $2$ .

$\frac{8 \sqrt{2} + \sqrt{2} \cdot 4 - 3 \sqrt{2} \cdot 4 + 7 \sqrt{2}}{4}$

Move $4$ to the left of $\sqrt{2}$ .

$\frac{8 \sqrt{2} + 4 \cdot \sqrt{2} - 3 \sqrt{2} \cdot 4 + 7 \sqrt{2}}{4}$

Multiply $4$ by $- 3$ .

$\frac{8 \sqrt{2} + 4 \sqrt{2} - 12 \sqrt{2} + 7 \sqrt{2}}{4}$

Step 5

Simplify by adding terms.

Add $8 \sqrt{2}$ and $4 \sqrt{2}$ .

$\frac{12 \sqrt{2} - 12 \sqrt{2} + 7 \sqrt{2}}{4}$

Subtract $12 \sqrt{2}$ from $12 \sqrt{2}$ .

$\frac{0 + 7 \sqrt{2}}{4}$

Add $0$ and $7 \sqrt{2}$ .

$\frac{7 \sqrt{2}}{4}$

Step 6

The result can be shown in multiple forms.

Exact Form:

$\frac{7 \sqrt{2}}{4}$

Decimal Form:

$2.47487373 \dots$

Simplify 1/3* square root of 72+1/4* square root of 32-1/2* square root of 72+7/12* square root of 18

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