化简 (2x-1)(2x+1)-(4x+3)(x-1)

问题描述:

化简 (2x-1)(2x+1)-(4x+3)(x-1)

(2x-1)(2x+1)-(4x+3)(x-1)
=(4x²-1)-(4x²-x-3)
=4x²-1-4x²+x+3
=x+2