Question

Tìm x biết:

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

Answer 1

     (4x-3)(2x+1)-(3x+4)²=5(2x-3)-(x-2)²

=>8x²-2x-3-9x²-24x-16=10x-15-x²+4x-4

=>-x²-26x-19=-x²+14x-19

=>-26=14

vậy ko tìm được x