It's Time For Roland's Problem of The Day!

Algebra Level 2

If :

X+ Y = 7

And :

XY = 5,

Find the value of x^3 + y^3

Note:

This problem was taken from the 2014-2015 Metrobank MTAP Math Challenge
It is undefined 242 I dont't know the answer 196 225 238

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1 solution

Lu Chee Ket
Jan 19, 2015

x^3 + y^3 = (x + y)^3 - 3 x y (x + y) = 7^3 - 105 = 238

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