1、 6m(p²- q）的三次方+4n（q - p ²）² =6m(p²- q）的三次方+4n（p²-q）² =2(p²-q)[3m(p²-q)+2n]=2(p²-q)(3mp²-3mq+2n)2、 a(x+y)+b(x+y)-c(x+y)=(x+y)(a+b-c)3...