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Finding the Value of an Expression

Question 6The...

Question

Question 6
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.
Given $p (x) = 5 x - 4 x^{2} + 3$ ...(i)
On putting x = -1 in eq.(i) we get,
$P (- 1) = 5 (- 1) - 4 (- 1)^{2} + 3 = - 5 - 4 + 3 = - 6$

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Find the value of the polynomial $5 x - 4 x^{2} + 3$ at
(i) $x = 0$
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Q. Question 1
Find the value of the polynomial

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at
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Finding the Value of an Expression

Standard VII Mathematics

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