Question

Use the discriminant to describe the roots of each equation. Then select the best description.

2x^2 + 7x + 6 = 0

a.double root
b.real and rational roots
c.real and irrational roots
d.non-real roots

Answer 1

D = b^2 - 4ac = 7^2 - 4*2*6 = 49 - 48 =  1   So there are 2 roots and

the roots are real and rational

b