化简x(x-3)+2(x+5)-3(X2-7x+14)
问题描述：
化简x(x-3)+2(x+5)-3(X2-7x+14)
答
x(x-3)+2(x+5)-3(X2-7x+14)
=x^2-3x+2x+10-3x^2+21x-42
=-2x^2+20x-32
=-2*(x-8)(x-2)
答
-2X2-22x-32
楼上有没算错啊
要好好学习阿
答
x(x-3)+2(x+5)-3(X2-7x+14)
=x^2-3x+2x+10-3x^2+21x-42
=-2x^2+20x-32
=-2(x^2-10x+16)
=-2(x-2)(x-8)
答
x方+14x-32
答
-2X2-22x+52
不好好学习,有问题,要自己解决.