Question: If x 2 + x y = 1 0 , then when x = 2 , d y d x = ( A ) -

If x2+xy=10, then when x=2,dydx=
(A)-72
(B)-2
(C)27
(D)32
(E)72
If x 2 + x y = 1 0 , then when x = 2 , d y d x =

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