Question

Решите уравнение
( 2x - 3)(2x+3)-X²=12x-69 +3x² 

Answer 1

4x^2+6x-6x-9-x^2=12x-69+3x^2
4x^2+6x-6x-x^2-12x-3x^2=-69+9
12x=60
X=5

Answer 2

-5