If x+y= 8, what is the value ofx^3+y^3+24xy – InterviewSolution

1.

If x+y= 8, what is the value ofx^3+y^3+24xy

Answer»

Answer:

$<klux>X</klux>^3 + y^3 + 24xy = 512$

Step-by-step EXPLANATION:

GIVEN that x + y = 8

$=>(x + y)^3 = 8^3$

$=>x^3 + 3xy(x + y) + y^3 = 512$

$=>x^3 + 3xy.8 + y^3 = 512$ [PUTTING the value of x + y = 8]

∴ $x^3 + y^3 + 24xy = 512$

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