x = [-10±√(100+40)]/4 =

(√140=11.832 approximately)x=0.458 and -5.458

(2) For -6x² -x - 1/3=0, the equation can be rewritten as -18x² -3x-1=0

or 18x² +3x+1=0.

x = [-3±√ (9-72)]/36. The roots are not real as we got square root of an imaginary number.

When the discriminant, i.e. b²-4ac<0, the roots are imaginary.

In this case, the discriminant is equal to -63.

You can also go to this link for quadratic equation solver on this website.

]]>Well, many of your maths related ones at least]]>

2x^2 +10x -5 =0 and I get -0.56 and 4.44 my son get the same???

and the other one -6x^2 - x -1/3= 0 and I get 1 or .5 my son has -.91 or .24??/

thanks for any help