Solve the equation 2x2 + 8x - 1 = 0
by completing the square.
Give your answers correct to 2 decimal places.​

Describe the end behavior of the function below. f(x)=(2/3)^x-2 a. as x increases, f(x) approaches infinity. b. as x decreases, f(x) approaches 2. c. as x increases, f(x) approaches -2. d. as x decreases, f(x) approaches negative infinity.