Question

Help me please yaar please Q.19​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

x3 - 8y3 - 36xy - 216 = 0

Step-by-step explanation:

x = 2y + 6 (GIVEN)

x3 - 8y3 - 36xy - 216

substituting x = 2y + 6 in x3 - 8y3 - 36xy - 216

(2y + 6)3 - 8y3 - 36(2y + 6)y - 216

using the identity (a+b)3 = a3 + b3 + 3ab(a + b),

8y3 + 216 + 3(2y)(6)[2y + 6] - 8y3 - 72y2 - 216y -216

=> 8y3 + 216 + 72y2 + 216y - 8y3 - 72y2 - 216y - 216

re arranging the terms,

8y3 - 8y3 + 72y2 - 72y2 + 216y - 216y + 216 - 216

after cancelling the terms,

ANSWER = 0

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