Question

use the quadratic formula to find the x-intercpets on the the graph of the equation
y=x^2+8x-5

Answer 1

For the equation of the form ax^2 + bx + c = 0, the x-intercepts will be
\[x=\frac{ -b \pm \sqrt{b^2-4ac} }{ 2a }\]

Answer 2

it say math processing error dr v

Answer 3

Do you have a = 1, b = 8 and c = -5?

Answer 4

so it would be 8/2(1)

Answer 5

Then it woud be x=4

Answer 6

any thoughts

Answer 7

?? What did you do to get x = 4?

With a = 1, b = 8 and c = -5, we have:

\(x = \dfrac{-8\pm\sqrt{8^{2}-4(1)(-5)}}{2(1)}\)