Question

6. Verify that
(i) 4 is a zero of the polynomial, p(x) = x - 4.
(ii) -3 is a zero of the polynomial, q(x) = x +3.
(iii)2/5 is a zero of the polynomial, f(x) = 2 - 5x.
(iv)-1/2 is a zero of the polynomial, g(y) = 2y +1.
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Answer 1

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(i) p(x) =x-4

$p(4) = 4 - 4 = 0 \: \\ hence \: it \: is \: zero \: of \: the \: polynomial \:$

(ii) q(x) =x+3

$q( -3) = - 3 + 3 = 0 \: hence \: verified$

(iii) f(x) =2-5x

$q( \frac{2}{5}) = 2 - 5 \times \frac{2}{5} = 0 \: \\ hence \: verified$

Same as 4

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