Question

If x+y =7 and xy=10 then find ( x^3+y^3)

Answer 1

Hlo friend.. Cutiepie Here..

Nice question.

Here is ur answer :


${(x + y)}^{3} = {x}^{3} + {y}^{3} + 3xy(x + y)$



Given, ( x+y ) = 7

xy = 10

${(7)}^{3} = {x}^{3} + {y}^{3} + 3(10)(7)$

$343 = {x}^{3} + {y}^{3} + 210$

${x}^{3} + {y}^{3} = 343 - 210$


${x}^{3} + {y}^{3} = 133$


HOPE IT HELPS YOU..

REGARDS
@sunita

Answer 2

Hence x^3+y^3=133.
please mark it as the brainliest answer