Question

What are the coordinates of the x-intercepts of the graph of y = 2x^2 + 6x – 20?

Answer 1

To find the x intercepts, plug the equation into the quadratic formula for quadratic equations of the form y = ax^2 + bx + c

quadratic formula :

-b ± SQRT(b^2 - 4ac)
x = --------------------
2a

For your question,
a = 2
b = 6
c = -20

Plug it in, and you will get 2 real solutions, both of which are the roots of your quadratic (the x intercepts).