Math, asked by shaunak3, 1 year ago

find the value of x cube + y cube + 15 x y - 125 if X + Y = 25

Answers

Answered by mrunmayi10

1

(x+y)3 = x3 + y3 + 3xsqy + 3xysq

125 = x3 + y3+ 3xy(x + y)

125 = x3 + y3+ 3xy(5)

125 = x3 + y3+ 15xy

x3 + y3+ 15xy - 125 = 0

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