Question
Verify that 2 is a zero of the polynomial $x^3 + 4x^2 - 3x - 18.$
✓
Answer
Let $p(x) = x^3 + 4x^2 - 3x - 18$
Now, $p(2) = 2^3 + 4 \times 2^2 - 3 \times 2 - 18 = 0$
$\therefore$ 2 is a zero of p(x).
Now, $p(2) = 2^3 + 4 \times 2^2 - 3 \times 2 - 18 = 0$
$\therefore$ 2 is a zero of p(x).
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