乘法公式

问题描述:

乘法公式

(-1+4x)(4x-1)2.(m-3)(-m+3)3.(-3a+b(-3a-b)4.(3a-2b)(-3a-2b)(-3a-2b)

5.(x-2)²-(x+1)(x-1)6.(2m-n)(n-2n)-(n-m)²

(-1+4x)(4x-1)=(4x-1)²=16x²-8x+1 2.(m-3)(-m+3)=-(m-3)²=-(m²-6m+9)=-m²+6m-93.(-3a+b(-3a-b)=(3a-b)(3a+b)=9a²-b² 4.(3a-2b)(-3a-2b) =-(3a-2b)(3a+2b)=-9a...