Question

What are the solutions of the equation (x + 2)2 – 2(x + 2) – 15 = 0? Use u substitution to solve.

Answer 1

x = –7 and x = 1

x = –5 and x = 3

x = –3 and x = 5

x = –1 and x = 7

Try this and I hope this helps.

Answer 2

x=-5 and x=3

Explanation: