Chapter 2: Introduction to Linear Polynomials
Chapter 2: Introduction to Linear Polynomials
Exercise
Question
Question: 2 (ii)
5 / 11
5 / 11
Find the value of the quadratic polynomial 7s^2 - 4s + 6 if:
(ii) s = -3
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Answer
1
Substitute s = -3 into the polynomial and simplify.
\text{$7 × ({color:#2E2EFF}-3{/color})^2 - 4 × ({color:#2E2EFF}-3{/color}) + 6$}
⇒
$7 × 9 + 12 + 6$
⇒
$63 + 12 + 6$
⇒
$81$
2
Write the value of the polynomial.
Answer: $81$