Question

What is the discriminant for the quadratic expression?


22x2 + 14x


A.
108

B.
284

C.
428

D.
196

Answer 1

The discriminant is the value of b^2 - 4ac. In your problem, a = 22, b = 14, and c = 0 (since there is no constant term, so we say c = 0)

So compute b^2 - 4ac. It's an arithmetic problem from here.

Answer 2

compare yours to \[\Large ax^2 + bx+c\]\[\Large 22x^2 + 14x\]
to help identify a, b and c

Answer 3

Ok its D