初二数学问题,题目请看详细提问??

2024-12-29 15:38:34
推荐回答(2个)
回答1:

【(x²+y²)-(x-y)²+2y(x-y)】÷4y
=(x²+y²-x²+2xy-y²+2xy-2y²)÷4y
=(4xy-2y²)÷4y
=x-y/2
=1/2(2x-y)
=10/2
=5

回答2:

您的详细提问呢?