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04/07/2021 1:31 pm
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Find the value of the polynomial (x) = 5x − 4x2 + 3
(i) x = 0
(ii) x = – 1
(iii) x = 2
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04/07/2021 1:33 pm
Let f(x) = 5x − 4x2 + 3
(i) When x = 0
f(0) = 5(0) - 4(0)2 + 3
= 3
(ii) When x = -1
f(x) = 5x − 4x2 + 3
f(−1) = 5(−1)−4(−1)2+3
= −5 – 4 + 3
= −6
(iii) When x = 2
f(x) = 5x−4x2+3
f(2) = 5(2)−4(2)2+3
= 10–16+3
= −3