Simplify -(49)^(1/2)

$- {(49)}^{\frac{1}{2}}$

Simplify the expression.

Rewrite $49$ as $7^{2}$ .

$- {(7^{2})}^{\frac{1}{2}}$

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$- 7^{2 (\frac{1}{2})}$

Cancel the common factor of $2$ .

Cancel the common factor.

$- 7^{2 (\frac{1}{2})}$

Rewrite the expression.

$- 7^{1}$

Evaluate the exponent.

$- 1 \cdot 7$

Multiply $- 1$ by $7$ .

$- 7$