Classes›Class 9›Maths›NCERT›Linear Polynomials›Exercise 2.2›Q 2
QUESTION 2 iii Easy

Find the value of the quadratic polynomial \(7s^2 − 4s + 6\) if:
\(s = 4\)

SOLUTION

1
Substitute \(s = 4 \) in \(7s^2 − 4s + 6\)
\(\begin{aligned}7(4)^2 − 4(4) + 6 &= 112 − 16 + 6\\ &= 102\end{aligned}\)
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Final Answer : The value is \(102\).

Concept Note

To find the value of a polynomial, substitute the given number in place of the variable and simplify.