Question

Use the discriminant to determine the nature of the roots of 2x2 + 4x + 3 = 0.

Answer 1

@myko Can you help?

Answer 2

discriminant of 2º order equation:
\[ax ^{2} +bx +c =0\]
is:\[D=b ^{2}-4ac\]
depending on the sign of D you know what are the roots:
D>0 : 2 distinct real roots
D=0: 2 equal real roots
D<0: no real roots

Answer 3

in your case a=2, b=4, c=3

Answer 4

So it's 2 equal real roots?

Answer 5

That's what I'm getting @myko

Answer 6

D=16-4*2*3=16-24=-8
no real roots

Answer 7

Oh, I see what I did wrong.