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Question

If p(x) = 5x – 4x2 + 3 then p(–1) =?
(a) 2
(b) –2
(c) 6
(d) –6

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Solution


p(x) = 5x – 4x2 + 3

Putting x = –1 in p(x), we get

p(–1) = 5 × (–1) – 4 × (–1)2 + 3 = –5 – 4 + 3 = –6

Hence, the correct answer is option (d).


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