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If -1 is a zero of the polynomial () = ² − 7 − 8, then find the other zero. |
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Answer» x=7+
x = 7 - \sqrt{5}x=7− 5
{x - 7 - \sqrt{5}} \: and \: x - 7 + \sqrt{5}x−7− 5
andx−7+ 5
(x - 7 - \sqrt{5})(x - 7 + \sqrt{5})(x−7− 5
)(x−7+ 5
) (x - 7) {}^{2} - 5(x−7) 2 −5 2 +49−14x−5 x {}^{2} - 14x + 44x 2 −14x+44 |
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