利用公式计算(x²-y²)÷(x+y)
问题描述:
利用公式计算(x²-y²)÷(x+y)
答
(x²-y²)÷(x+y)
=(x-y)(x+y)÷(x+y)
=x-y
利用公式计算(x²-y²)÷(x+y)
(x²-y²)÷(x+y)
=(x-y)(x+y)÷(x+y)
=x-y