(2x+7)×(3x-4)+(3x+5)×(3x-2)计算

问题描述:

(2x+7)×(3x-4)+(3x+5)×(3x-2)计算

15x2+22x-38

(2x+7)×(3x-4)+(3x+5)×(3x-2)=15x²+22x-38

(6x^2+13x-28)+(9x^2+9x-10)
=15x^2+21x-38