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Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -2x2 + 2x + 2.Asked by WINSTON
select the approximate values of x that are solutions to f(x)=0 where f(x)-5x^2+8+5
Answers
Answered by
Henry
F(x) = 5x^2 + 8x + 5 = 0
Quadratic Formula:
X = (-B +- sqrt(B^2-4AC))/2a
X = (-8 +- sqrt(64-100))/10 =
(-8 +- sqrt(36*(-1))/10 =
(-8 +- 6i)/10 = -0.8 +- 0.6i =
-0.8 + 0.6i, and -0.8 - 0.6i.
So we have 2 imaginary solutions.
Quadratic Formula:
X = (-B +- sqrt(B^2-4AC))/2a
X = (-8 +- sqrt(64-100))/10 =
(-8 +- sqrt(36*(-1))/10 =
(-8 +- 6i)/10 = -0.8 +- 0.6i =
-0.8 + 0.6i, and -0.8 - 0.6i.
So we have 2 imaginary solutions.