Question

Solve this quadratic equation using the quadratic formula.

x2 + 8x - 5 = 0

Answer 1

What do you think ??

Answer 2

Have you tried it once ??

Answer 3

i dont know, no.

Answer 4

Here:

a = 1, b = 8 and c = -5

Firstly find Discriminant using:
\[D = b^2 - 4ac\]

Then find x by using:
\[x = \frac{-b \pm \sqrt{D}}{2a}\]

Answer 5

i have no clue

Answer 6

Find D:

\[D = b^2 - 4ac\]
Here :

b = 8, a = 1 and c = -5..

Just plug in the values..

Answer 7

well water in eyes divided into 2 steps which is the easiest.
Lets first fine out what our D equals

Answer 8

Like he said b=8 our a=1 and c=-5
\(8^2-4(1)(-5) =?\)

Answer 9

Put this into a calc and see what you get

Answer 10

Are you there?

Answer 11

i solved it. thanks

Answer 12

Great :D