ok telling wait first . the question is in the image ok first see below ok .
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Answer:
hmmm exam hai kya vmro
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dekh vmro exam me cheating mat kro
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1
A. solution:-
x=2y+6
x^3-8y^3-36xy-216
=(2y+6)³-8y³-36(2y+6)y-216 =8y³+6³ +3×(2y)²x6+3x2yx6² -8y³-72y²-216y-216 =8y³+216 +3×4y²x6+3x2y+36-8y³ -8y³-8y³ +72y²-72y²+216y
-72y²-216y-216 =8y³+216 +72y²+216y-8y³
-72y²-216y-216
-216y+216-216
=0 Ans
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