4 years ago

Solve by completing the square -x^2+8x-6=0

1 answer:

6 0

-x² + 8x - 6 = 0
x = -(8) +/- √((8)² - 4(-1)(-6))
 2(-1)
x = -8 +/- √(64 - 20)
 -2
x = -8 +/- √(44)
 -2
x = -8 +/- 2√(11)
 -2
x = -8 + 2√(11) x = -8 - 2√(11)
 -2 -2
x = 4 - √(11) x = -8 + √(11)

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