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X^2-8x-9=0 solve by completing the square

User Rozy
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4 votes
-1 jfbdjebfbhevdibd djfbd
User Nikketa
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Answer: (x-9)(x+1), so x=9 and x=-1

Explanation:

X^2-8x-9=0

-9 times 1 = -9 and -9 plus 1 = -8

So (x-9)(x+1)

X=9, x=-1

User Pijotrek
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