Evaluate 4- square root of 81+(2(3+2^2))÷(1/2)

$4 - \sqrt{81} + 2 (3 + 2^{2}) \div \frac{1}{2}$

Find the common denominator.

Write $4$ as a fraction with denominator $1$ .

$\frac{4}{1} - \sqrt{81} + 2 (3 + 2^{2}) \div \frac{1}{2}$

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

$\frac{4}{1} \cdot \frac{\frac{1}{2}}{\frac{1}{2}} - \sqrt{81} + 2 (3 + 2^{2}) \div \frac{1}{2}$

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

$\frac{4 (\frac{1}{2})}{\frac{1}{2}} - \sqrt{81} + 2 (3 + 2^{2}) \div \frac{1}{2}$

Write $- \sqrt{81}$ as a fraction with denominator $1$ .

$\frac{4 (\frac{1}{2})}{\frac{1}{2}} + \frac{- \sqrt{81}}{1} + 2 (3 + 2^{2}) \div \frac{1}{2}$

Multiply $\frac{- \sqrt{81}}{1}$ by $\frac{\frac{1}{2}}{\frac{1}{2}}$ .

$\frac{4 (\frac{1}{2})}{\frac{1}{2}} + \frac{- \sqrt{81}}{1} \cdot \frac{\frac{1}{2}}{\frac{1}{2}} + 2 (3 + 2^{2}) \div \frac{1}{2}$

Multiply $\frac{- \sqrt{81}}{1}$ by $\frac{\frac{1}{2}}{\frac{1}{2}}$ .

$\frac{4 (\frac{1}{2})}{\frac{1}{2}} + \frac{- \sqrt{81} \frac{1}{2}}{\frac{1}{2}} + 2 (3 + 2^{2}) \div \frac{1}{2}$

Combine the numerators over the common denominator.

$\frac{4 (\frac{1}{2}) - \sqrt{81} \frac{1}{2} + 2 (3 + 2^{2})}{\frac{1}{2}}$

Simplify each term.

Cancel the common factor of $2$ .

Factor $2$ out of $4$ .

$\frac{2 (2) \frac{1}{2} - \sqrt{81} \frac{1}{2} + 2 (3 + 2^{2})}{\frac{1}{2}}$

Cancel the common factor.

$\frac{2 \cdot 2 \frac{1}{2} - \sqrt{81} \frac{1}{2} + 2 (3 + 2^{2})}{\frac{1}{2}}$

Rewrite the expression.

$\frac{2 - \sqrt{81} \frac{1}{2} + 2 (3 + 2^{2})}{\frac{1}{2}}$

Rewrite $81$ as $9^{2}$ .

$\frac{2 - \sqrt{9^{2}} \frac{1}{2} + 2 (3 + 2^{2})}{\frac{1}{2}}$

Pull terms out from under the radical, assuming positive real numbers.

$\frac{2 - 1 \cdot 9 \frac{1}{2} + 2 (3 + 2^{2})}{\frac{1}{2}}$

Multiply $- 1$ by $9$ .

$\frac{2 - 9 (\frac{1}{2}) + 2 (3 + 2^{2})}{\frac{1}{2}}$

Combine $- 9$ and $\frac{1}{2}$ .

$\frac{2 + \frac{- 9}{2} + 2 (3 + 2^{2})}{\frac{1}{2}}$

Move the negative in front of the fraction.

$\frac{2 - \frac{9}{2} + 2 (3 + 2^{2})}{\frac{1}{2}}$

Raise $2$ to the power of $2$ .

$\frac{2 - \frac{9}{2} + 2 (3 + 4)}{\frac{1}{2}}$

Add $3$ and $4$ .

$\frac{2 - \frac{9}{2} + 2 \cdot 7}{\frac{1}{2}}$

Multiply $2$ by $7$ .

$\frac{2 - \frac{9}{2} + 14}{\frac{1}{2}}$

Find the common denominator.

Write $2$ as a fraction with denominator $1$ .

$\frac{\frac{2}{1} - \frac{9}{2} + 14}{\frac{1}{2}}$

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

$\frac{\frac{2}{1} \cdot \frac{2}{2} - \frac{9}{2} + 14}{\frac{1}{2}}$

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

$\frac{\frac{2 \cdot 2}{2} - \frac{9}{2} + 14}{\frac{1}{2}}$

Write $14$ as a fraction with denominator $1$ .

$\frac{\frac{2 \cdot 2}{2} - \frac{9}{2} + \frac{14}{1}}{\frac{1}{2}}$

Multiply $\frac{14}{1}$ by $\frac{2}{2}$ .

$\frac{\frac{2 \cdot 2}{2} - \frac{9}{2} + \frac{14}{1} \cdot \frac{2}{2}}{\frac{1}{2}}$

Multiply $\frac{14}{1}$ by $\frac{2}{2}$ .

$\frac{\frac{2 \cdot 2}{2} - \frac{9}{2} + \frac{14 \cdot 2}{2}}{\frac{1}{2}}$

Combine the numerators over the common denominator.

$\frac{\frac{2 \cdot 2 - 9 + 14 \cdot 2}{2}}{\frac{1}{2}}$

Simplify each term.

Multiply $2$ by $2$ .

$\frac{\frac{4 - 9 + 14 \cdot 2}{2}}{\frac{1}{2}}$

Multiply $14$ by $2$ .

$\frac{\frac{4 - 9 + 28}{2}}{\frac{1}{2}}$

Simplify by adding and subtracting.

Subtract $9$ from $4$ .

$\frac{\frac{- 5 + 28}{2}}{\frac{1}{2}}$

Add $- 5$ and $28$ .

$\frac{\frac{23}{2}}{\frac{1}{2}}$

Multiply the numerator by the reciprocal of the denominator.

$\frac{23}{2} \cdot 2$

Cancel the common factor of $2$ .

Cancel the common factor.

$\frac{23}{2} \cdot 2$

Rewrite the expression.

$23$

Evaluate 4- square root of 81+(2(3+2^2))÷(1/2)

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