algebra
posted by
Mary
.
solve for x
2x^24x+5=0
is the answer 2.22, 0.22

algebra 
Reiny
I have no idea how you got your answers.
Didn't you test them by substituting them back into the equation ?
2x^2  4x + 5 = 0
2x^2 + 4x  5 = 0
x = (4 ± √56)/4 = .8708 or 2.8708

algebra 
Mary
Thank you so much could you look at my other problem