if x=2y+6 then find the value of x^3-8y^3-36xy-216.
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sorry there was a mistake ...I forgot to wrote 8y³ in the third line..check it...and then simplify the answer u will get 0
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lonelypark09:
i took x=2y+6 and then 2y+6=0. Is it wrong?
sorry first time i had done a mistake but now i clear the mistake...hope u will understand
if u take 2y+6=0 then it will b wrlng
wrong bcoz 2y+6=x ( given in the problem
okay. so we will just put the value of x and solve. Whatever polynomial or constant we get will be the answer.
thanks a lot for your help. You saved my day.
no problem
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