Math miscellaneousHard

Question

If X^m. yⁿ = (x + y)^{m + n}, then is

Options

A.

B.

C.xy

D.

Solution

x^m.yⁿ = (x + y)^m+n ⇒ mlnx + nlny = (m + n)ln(x + y)
∴

⇒

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