Find P(-2÷3) if P(y)=2y3 -y2 -13y-6
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P(y)=2y^3 - y^2 - 13y - 6
P(-2/3) = 2(-2/3)^3 - (-2/3)^2 - 13(-2/3) - 6
= 2(-8/27) - 4/9 + 26/3 -6
= -16/27 - 4/9 + 26/3 - 6
= (-16 - 4x3 + 26x9 - 6x27)/27
= (-16-12+234-162)/27
= 44/27
therefore P(-2/3) = 44/27
P(-2/3) = 2(-2/3)^3 - (-2/3)^2 - 13(-2/3) - 6
= 2(-8/27) - 4/9 + 26/3 -6
= -16/27 - 4/9 + 26/3 - 6
= (-16 - 4x3 + 26x9 - 6x27)/27
= (-16-12+234-162)/27
= 44/27
therefore P(-2/3) = 44/27
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