Question

If x+y=4, find x³+y³+64-12xy.

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Answer 1

Step-by-step explanation:

If x+y=4, find x³+y³+64-12xy.

x+y=4

cube both sides

(x+y)³=4³

x³+y³+3xy(x+y)=64

x³+y³+3xy(4)=64

x³+y³+12xy-64=0