How do you evaluate -7^2?

Jun 10, 2016

$- 49$

Explanation:

Recall that an exponent represents the number of times the base is multiplied by itself.

$- {7}^{2}$

$\underline{\text{where}}$:
base$= 7$
exponent$= 2$

the expression means to multiply $7$ by itself two times.

Hence,

$= - \left(7 \times 7\right)$

$= - \left(49\right)$

$= \textcolor{g r e e n}{| \overline{\underline{\textcolor{w h i t e}{\frac{a}{a}} \textcolor{b l a c k}{- 49} \textcolor{w h i t e}{\frac{a}{a}} |}}}$