Question

please answer 6 question

Answer 1

I hope this will help you



x+2y=10

Cube on both sides

(x+2y)³=x³+8y³+3(x*2y) (x+2y)

(10)³=x³+8y³+6xy(10)

1000=x³+8y³+60xy

1000-60xy=x²+8y³

1000-900=x³+8y³ ( value of xy =15)

100=x³+8y³ is your answer

Answer 2

it is your answer..............