Evaluate -3^2+ square root of 4

$- 3^{2} + \sqrt{4}$

Simplify each term.

Raise $3$ to the power of $2$ .

$- 1 \cdot 9 + \sqrt{4}$

Multiply $- 1$ by $9$ .

$- 9 + \sqrt{4}$

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

$- 9 + \sqrt{2^{2}}$

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

$- 9 + 2$

Add $- 9$ and $2$ .

$- 7$