AnswersIntegrated Math 2A - Mr. Katykhin 26Introduction to the Quadratic Formula

Introduction to the Quadratic Formula Answers

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1
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Which equation has the components of 0 = x2 – 9x – 20 inserted into the quadratic formula correctly?

A
x =
B
x =
C
x =
D
x =
2
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b =

A
–2
B
1
C
2
D
5
3

c =

A
–2
B
1
C
2
D
5
4

4. Analyze the discriminant.b2 – 4ac =

A
–39
B
33
C
39
D
41
5

The quadratic function will have .

A
2 real number zeros
B
1 real number (double) zero
C
0 real number zeros
6

Determine the zeros of the function f(x) = 3x2 – 7x + 1.

A
x =
B
x =
C
x =
D
x =
7

3. Determine the values for a, b, and c. a =

A
–2
B
1
C
2
D
5
8

Did Trish find the correct zeros of this function? Explain.

A
Yes, those are the two real number zeros.
B
No, the two real number zeros are .
C
No, the two real number zeros are .
D
No, the function has no real number zeros.

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