(x-3)(x+3)=(x-2)(x-1)x^2-9=x^2-3x+23x=11x=11/3望采纳,多谢!
(x-3)(x+3)=(x-2)(x-1)x²-9=x²-3x+23x=11x=11/3
x*x-9=x*x-3x+2 3X=11 X=11/3