Consider the quadratic equation x2+5x+11=0. What is the discriminant of the quadratic equation?

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asked Dec 21, 2018 107k views

1 Answer

Matt Wrock · Answer 1 · 2018-12-28T02:28:27+0000

The discriminant of a quadratic equation
$a{x}^(2) +bx+c=0$ is given by
${b}^(2)-4ac$ .
Plugging in, we get
${(1)}^(2) -4(5)(11)=1-220=\boxed{-219}$ .
...Trivial plugging in; really no thought required. I don't like seeing questions like these in math class.

Consider the quadratic equation x2+5x+11=0. What is the discriminant of the quadratic equation?

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