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find the value od x3+y3-12xy+64 when …

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find the value od x3+y3-12xy+64 when x+y=-4

Posted by Omaan 10119931 6 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Gaurav Seth 6 years, 3 months ago

Given that, x+y = -4

The formula, x³ + y³ -12xy +64

=> (x + y )³ - 3xy ( x+y) - 12xy + 64

=> (-4)³ - 3xy (-4) - 12xy + 64

=> -64 + 12xy - 12xy + 64

=> 0 [ Answer ]

2Thank You

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