Question

5. Verify whether x = -1 is a zero of the following polynomials or not:
p(x) = x2 - 1
(ii)3x-2
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Answer 1

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$p(x) = {x}^{2} - 1$

$p( - 1) = {( - 1)}^{2} - 1$

$p( - 1) = 1 - 1 = 0$

YES ITS THE ZERO OF THIS POLYNOMIAL.

$p(x) = 3x - 2$

$p( - 1) = 3( - 1) - 2$

$p( - 1) = - 3 - 2 = - 5$

NO THIS IS NOT THE ZERO OF THIS POLYNOMIAL