What is the value of b^2-4ac for the following equation?
2x^2 - 2x - 1 = 0

a.-4
b.0
c.12

answer is 144

step-by-step explanation:

since we know that the two functions are equal, f (x) = g

(x), therefore when we equate the two equations the result should be similar to

3x = x – 4:

a. f(x) = 3x, g(x) = x – 4

equating the two functions:

3x = x – 4             (correct)

so we now got our answer (a)