Question

[x/y+y/x+1]^2 expand form​

Answer 1

Answer:

(a+b)²=a²+b²+2ab

(x/y +y/x+1)²=(x/y)²+(y/x+1)²+2(x/y)(y/x+1)

=x²/y²+y²/x²+1+2x +2x/x+1

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