September 2018 2 67 Report
Minta tolong koreksi pekerjaan ku ini :)
x/(x+y)+y/(x-y) = (x(x-y)+y(x+y))/((x+y)(x-y)) =(x^2-xy+xy+y^2)/((x+y)(x-y)) =(x^2+y^2)/((x+y)(x-y))

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