Express (x^n+5/y) ^2

Answer with positive exponents.

A. x^2n+10/y^2

B. y^2/x^2n+10

C. x^n+7/y^2

Aman age is three times more than his sons age. Ten years ago he was five time his son age. What are present ages

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If f (x) = x^2 - 1 and g (x) = 2x - 3, what is the domain of (f. g) (x) ?

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