Question

What is the discriminant of the quadratic equation 2x+5x^2=1

Answer 1

Answer:D.24

Explanation:

Answer 2

Discriminant is 24 and the equation has 2 real roots.

Explanation:

To find the number of real roots for a quadratic, we apply the discriminate. The discriminate is the inside portion of the square root from the quadratic formula.

•
`b^2-4ac>0` yields 2 real roots

•
`b^2-4ac=0` yields 1 real root

• [tx]b^2-4ac<0[/tex] yields no real roots

Our the equation is
`2x+5x^2=1` can be arranged to
`5x^2+2x-1` where a=5, b=2, and c=-1.

`b^2-4ac=(2)^2-4(5)(-1)=4+20=24<0)`. The equation has 2 real roots .