PLEASE EXPLAIN YOUR ANSWER What is the xcoordinate of the ve

PLEASE EXPLAIN YOUR ANSWER

What is the x-coordinate of the vertex of the parabola f (x) 2x2 4x 3 2 a. b.-1 d. 1

Solution

2x^2 + 4x - 3

Compare this with ax^2 + bx + c

and we get

a = 2 , b = 4 and c = -3

The x-coordinate of the vertex has a formula : -b / (2a)

x = -4 / (2*2)

x = -4 / 4

x = -1

So, option B