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Quadratic Polynomial

Question 6 Th...

Question

The value of the polynomial $5 x - 4 x^{2} + 3$ , when $x = - 1$ is
A) $- 6$
B) $6$
C) $2$
D) $- 2$

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Solution

The answer is A ( $- 6$ ).
Given $p (x) = 5 x - 4 x^{2} + 3$ ...(i)
On putting $x = - 1$ in eq.(i) we get,
$p (- 1) = 5 (- 1) - 4 (- 1)^{2} + 3$
$= - 5 - 4 + 3$
$∴ p (- 1) = - 6$

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Q. Question 1
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Quadratic Polynomial

Standard X Mathematics

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