Question

x+3)(x-3)=5-(x+2)(x-2)

Answer 1

(x+3)(x-3)=5-(x+2)(x-2)

x²-9=5-x²+4

x²+x²=9+5+4

2x²=18

x²=9

x=+-√9

x=+-3

S={-3;+3}