Question

The square of the sum of a number and 3 is 16. Find the number.(There are two solutions.)

Answer 1

1,-7 hope this helps

Answer 2

1 , -7

Explanation:

(x+3)² = 16

then

(x+3)² = 4²

then

|x+3| = 4

then

x+3=4 or x+3= -4

then

x=4-3=1 or x= -4-3= -7