Question

IF X+Y=4, THEN FIND THE VALUE OF X CUBE +Y CUBE + 12XY - 64

Answer 1

answer:0

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Answer 2

Answer:

Step-by-step explanation:

(x+y) = 4

Taje a cube of both sides

=> (x+y)^3 = 4^3

= x^3 + y^3 +3xy(x+y) = 64

= Substitute the value of x+y=4 in the above eq.

x^3 +y^3 + 3xy(4) = 64

=x^3 + y^3 + 12xy =64

Or

x^3 + y^3 + 22xy -64 =0

which is the required ans.

Hope it is clear