Question

if one zero of the polynomial X square + a is minus 3 then find its other zero

Answer 1

Hey user !!

So here's u r answer !!

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x ^2 + a = 0

( - 3 ) ^2 + a = 0

9 + a = 0

a = - 9

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Answer 2

Hey there!!

Here's your answer

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$f(x) = {x}^{2} + a \\ f(3) = {(3)}^{2} + a = 0 \\ 9 + a = 0 \\ a = - 9$

The other zero is -9

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Hope it helps...!!