Question

Solve by factoring. x² - 121 = 0

0
-11
11
11, -11

Solve by factoring. m² + 8m + 7 = 0

8,7
-7, 1
-7, -1
7, 1

Answer 1

The first one is 11 and -11 because when you square them they both get 121
The second one is -7 and -1