Question

if x+y=8 what is the value of xcube+ycube+24xy with full explanation

Answer 1

Answer:

512

Step-by-step explanation:

given, x+y=8-------> 1

cubing on both sides

(x+y)^3=8^3

x^3+y^3+3xy(x+y)=512

x^3+y^3+3xy(8)=512    {by substituting 1}

x^3 y^3+24xy=512

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