math

Select the approximate values of x that are solutions to f(x) = 0, where

f(x) = -2x2 + 2x + 2.

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asked by lou
  1. -7x^2 + 2x + 6 = 0
    using quadratic formula:
    x = [-2 +/- SQR(4 - 4(-7)(6))]/2(-7)
    x = [-2 +/- SQR(172)]/-14
    x = [-2 +/- 13.11]/-14
    x = -0.79, 1.08 (first choice)

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    posted by Cindy

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