Asked by lou
Select the approximate values of x that are solutions to f(x) = 0, where
f(x) = -2x2 + 2x + 2.
Answers
Cindy
-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)
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)