计算 (16 18:57:11)(2x-3)(x-1) 

问题描述:

计算 (16 18:57:11)
(2x-3)(x-1)
 

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

原式=2x^2-2x-3x+3
=2x^2-5x+3

(2x-3)(x-1)
=2X*X+2X*(-1)+(-3)*X+(-3)*(-1)
=2X平方-2X-3X+3
=2X平方-5X+3

=2x²-2x-3x+3
=2x²-5x+3