(x+y)平方+mx+my
问题描述:
(x+y)平方+mx+my
答
(x+y)²+mx+my
=(x+y)²+m(x+y)
=(x+y)(x+y+m)
(x+y)平方+mx+my
(x+y)²+mx+my
=(x+y)²+m(x+y)
=(x+y)(x+y+m)