Can anyone help me to use the quadratic formula to solve this equation?

4x^2 -9x -1 = 0

Question

Can anyone help me to use the quadratic formula to solve this equation?

4x^2 -9x -1 = 0

nurali · Answer

jdoe0001 · Answer

the quadratic formula is pretty straight forward
 just plug your values in

anonymous · Answer

I have and I have an answer, I just want to check if my answer is correct.

anonymous · Answer

i will check your answer what is it :)

anonymous · Answer

x=9 + sqrt. 97/8, and 9 - sqrt 97/8

nurali · Answer

4x^2 -9x -1 = 0

a=4, b=-9 and c=-1

x=-b+-sqrt(b^2-4ac)/2a

x=9+-sqrt(81+16)/8
x=9+-sqrt(97)/8

x=9 + sqrt. 97/8, and 9 - sqrt 97/8

anonymous · Answer

Nurali you got the same answer as I did so this is correct right?  because I also thought it might be x = 1/8 (9-sqrt 97) x = 1/8 (9+ sqrt 97)

nurali · Answer

Both are right.

anonymous · Answer

Cool!  You are racking up medals!