Question

Which of the following statement(S) are true of the discriminant?


A) The discriminant is b^2 – 4ac in the quadratic formula.
B) The discriminant is the denominator in the quadratic formula.
C) The discriminant is the radicand of the quadratic formula.
D) The discriminant is the value under the radical in the quadratic formula.
E) The discriminant is the value in front of the radical in the quadratic formula.

Answer 1

Hello from MrBillDoesMath!

Answer:    A, C, D

Discussion:

The solution of the quadratic equation  ax^2 + bx + c = 0  is

x =        ( -b  +\-   (b^2 - 4ac) ^ (1/2) ) /2a

The expression b^2 - 4ac is called the discriminant, occurs in the numerator of the solution,  and also occurs inside a square root (called a radicand).

The question, while intelligible, should be stated more clearly.  

Regards, MrB

Answer 2

SOS

Answer:

The answers are:

1. The discriminant is $b^2-4ac$ in the quadratic formula.
2. The discriminant is the radicand of the quadratic formula.
3. The discriminant is the value under the radical in the quadratic formula.

Hope this helps!!