Question

Solve the following using the quadratic formula. Round to the nearest tenth, if necessary.
x2 + 5x - 2 = 0

{-2, 5}
{-5.4, 0.4}
{-1, 0.5}
No real solution

Answer 1

use the quadratic formula

x =[ -b +- sqrt(b^2 - 4ac)] / 2a

here a = 1 , b = -5 and c = -2

Answer 2

a = 1, b = 5 and c - 2

then \[x = \frac{-5\pm \sqrt{5^2 - 4\times1\times(-2)}}{2\times1}\]

just evaluate

Answer 3

would it be B? o:

Answer 4

B looks like the answer

Answer 5

Thanks for the help(: <3