QUESTION 2
ii
Easy
Find the value of the quadratic polynomial \(7s^2 − 4s + 6\) if:
\( s = −3 \)
SOLUTION
1
Substitute \(s = −3 \) in \(7s^2 − 4s + 6\)
\(\begin{aligned}7(−3)^2 − 4(−3) + 6 &= 63 + 12 + 6\\ &= 81\end{aligned}\)
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Final Answer : The value is \(81\).
Concept Note
To find the value of a polynomial, substitute the given number in place of the variable and simplify.