Question

Solve the problem by using the quadratic formula. Write solutions in simplest radical form.
2x^2 – 2x – 1 = 0

Answer 1

for the quation ax^2 + bx + c = 0

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

Answer 2

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

Answer 3

thx, I'll se if that is right. Im now very good with the quadratic formula

Answer 4

not*

Answer 5

yeah pretty much what @welshfella said

Answer 6

I wrote that out and got 3 +/- sqrt 9-20 is that right so far?