Question

Verify whether 2 is zero of the polynomial x3+4x2-3x-18 or not ?​

Answer 1

Answer:

Yes 2 is a zero of the polynomial.

Step-by-step explanation:

$let \: p(x) = {x}^{3} + 4 {x}^{2} - 3x - 18 \: then \: \\ we \: have \: to \: check \: whether \: p(2) = 0 \\ p(2) = {2}^{3} + 4( {2)}^{2} - 3(2) - 18 \\ = 8 + 4(4) - 6 - 18 \\ = 8 + 16 - 24 \\ = 24 - 24 \\ p(2) = 0 \\ hence \: 2 \: is \: a \: zero \: of \: p(x)$

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