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Question
Find the value of the polynomial 2x3 + 2x , when x = –1.
Sum
Solution
Given, P(x) = 2x3 + 2x
Put x = –1
∴ P(–1) = 2(–1)3 + 2(–1)
= –2 – 2
= – 4
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Linear Equation in Two Variables
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