(2X+3)(2X-3)-(3X+1)(X-3)的计算步骤及答案

问题描述:

(2X+3)(2X-3)-(3X+1)(X-3)的计算步骤及答案

(2X+3)(2X-3)-(3X+1)(X-3)
=4x^2-9-(3x^2-9x+x-3)
=x^2+8x-6