20 find the value of x3 +y3-12xy+64when x+y=-4 – InterviewSolution

1.

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

Answer»

Answer: x³ + y³ - 12xy + 64

x³ + y³ + 4³ - 3(4XY) (64 = 4³)

(x + y + 4)(x² + y² + 4² - XY - 4y - 4x)

x + y = - 4

(- 4 + 4) * (x² + y² + 4² - xy - 4y - 4x)

0 * (x² + y² + 4² - xy - 4y - 4x)

= 0

Step-by-step EXPLANATION:

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