Question

(3х-2)(3х+2)-(3х-1)(3х+3)=5.

Answer 1

9x^2 - 4 - (9x^2 + 6x - 3) - 5 = 0
9x^2 - 4 - 9x^2 - 6x + 3 - 5 = 0
- 6x - 6 = 0
6x + 6 = 0
x + 1 = 0
x = - 1

Answer 2

(3х-2)(3х+2)-(3х-1)(3х+3)=5.
9х^2-4-(9x^2+9x-3x-3)=5
9х^2-4-9x^2-9x+3x+3=5
-4-9x+3x+3=5
-1-6x=5
-6x=5+1
-6x=6
x=-1