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3 years ago

What are the possible values of x in -11x^2 + 2x = 10?

1 answer:

8 0

-11x² + 2x = 10
-11x² + 2x - 10 = 10 - 10
-11x² + 2x - 10 = 0
x = -(2) +/- √((2)² - 4(-11)(-10))
 2(-11)
x = -2 +/- √(4 - 440)
 -22
x = -2 +/- √(-436)
 -22
x = -2 +/- 2i√(109)
 -22
x = -2 + 2i√(109) x = -2 - 2i√(109)
 -22 -22
x = ¹/₁₁ - ¹/₁₁i√(109) x = ¹/₁₁ + ¹/₁₁i√(109)

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2 years ago

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1 year ago

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3 years ago

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Solve 80% of x = 100 or 0.8x = 100

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125

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divide both sides of the equation by 0.8

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3 years ago