# How do you evaluate #-7^2#?

##### 1 Answer

Jun 10, 2016

#### Explanation:

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

For instance, in your case,

#-7^2#

#ul("where")# :

base#=7#

exponent#=2#

the expression means to multiply

Hence,

#=-(7xx7)#

#=-(49)#

#=color(green)(|bar(ul(color(white)(a/a)color(black)(-49)color(white)(a/a)|)))#