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填空-5/7x=()/7x=5/()x-y/x+y=X^2-y^2/()填空-5/7x=()/7x=5/()x-y/x+y=X^2-y^2/()
题目详情
填空-5/7x=( )/7x=5/( ) x-y/x+y=X^2-y^2/( )
填空-5/7x=( )/7x=5/( ) x-y/x+y=X^2-y^2/( )
填空-5/7x=( )/7x=5/( ) x-y/x+y=X^2-y^2/( )
▼优质解答
答案和解析
-5/7x=(-5 )/7x=5/( -7x )
x-y/x+y=X^2-y^2/(x+y)²
x-y/x+y=X^2-y^2/(x+y)²
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