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olga2289 [7]
3 years ago
14

Find the roots of the quadratic equation x^2 – 8x = 9 by completing the square. Show your work.

Mathematics
1 answer:
loris [4]3 years ago
3 0
X² - 8x = 9
x² - 8x - 9 = 0
x² + x - 9x - 9 = 0
x(x + 1) -9(x + 1) = 0
(x+1)(x-9) = 0
x = -1 or 9

In short, Your Answers would be -1 & 9

Hope this helps!
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