Question

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

x^2-5x+7=0

A.) Double Root
B.) Real and Rational Roots
C.) Real and Irrational Roots
D.) Non-real Roots

Answer 1

b^2 -4ac is the discriminant
5^2 -4*1*7
25-28= -3
Since the discriminant is negative the answer will be D non real roots.

Answer 2

I think the answer would be D