Question

What is the discriminant of the quadratic equation 0=2x2+3x-5

Answer 1

"What is the discriminant of the quadratic equation 0=2x2+3x-5 "

49

Answer 2

49

Explanation:

In the quadratic formula, the expression under the sign of the square root,
`b^(2)-4ac`, is called the discriminant.

`x=\frac{-b\pm \sqrt{b^(2)-4ac}}{2a}`

So we replace each term and find the discriminant:

`a=2\\b=3\\c=-5\\discriminant=3^(2) -4(2)(-5)=9+40=49`