If x = 2 - y, then show that x cube + 6xy +y cube - 8 =0
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Step-by-step explanation:
L.H.S=(2-y)^3+6 (2-y)y+y^3-8
=8-y^3+6y^2-12y+12y-6y^2+y^3-8
=0
LHS=RHS
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