Question

please answer if you know only ​

Answer 1

Answer: 3

first we multiply $(-7)^{x+2}$ and  $(-7)^{5}$

=> $(-7)^{(x+2+5)}$ = $(-7)^{x + 7}$

so

$(-7)^{x+7} = (-7)^{10}$

so now we can do equation on the powers

x + 7 = 10

x = 10 -7

x = 3

so final result is 3