Math problem any help is great!

ok so I have this problem I'm not really sure about. I have to factor this

original = 4x^2 + 15x + 6

-15 ± √15^2 - 4 (4) (6)
_______________________

-15 ± √225 - 95

_______________________

-15 ± √129
________
2(4)

________________________



-15 ± √129
________
8



Now I'm not sure how to continue. I need it so I get

X = ?

I know its 2 numbers but I forgot how to do it.

You solve that equation twice: once for the addition and once for the subtraction:

x1 = (-15 + √129)/8 = -0.455...

x2 = (-15 - √129)/8 = -3.29...

the formula says x= (-b(+/-)√b^2-4ac)/2a

so x =
-15 ± √129
________
8
and it means x=
-15 + √129
________
8
or
=-15 - √129
_______
8
no more simplification needed