Question

Which graph shows the zeros of the function f(x) = 2x2 + 4x – 6 correctly?​

Answer 1

Divide through by 2 .

x2 - 2x - 3 = 0 What two numbers add to -2 and multiply to -3 ? → +1 and -3

So...we can factor it like this...

(x + 1)(x - 3) = 0 Set each factor equal to zero and solve for x.

x + 1 = 0 and x - 3 = 0

x = -1 and x = 3

Explanation: