Question

The discriminant of a quadratic equation is the value b2 – 4ac. What is the value of the discriminant of 0 = –2x2 + 6x + 13?

Answer 1

Discriminant form:

ax2+bx=c=0

-2x2+6x=13=0

DISCRIMINANT:

-b+4ac

-6+4(-2)(-13)=-6+4(26)=-6+30=24

Now for the x's:

x1=
`-b+√(x) /2a`

x2=
`-b-√(x) /2a`

Answer 2

Answer ; D = 140...............