AnswersFL-1200700-Mathematics for College Algebra MISSolving Quadratic Equations: Quadratic Formula

Solving Quadratic Equations: Quadratic Formula Answers

14 verified answers3 views
1
Free Preview

Determine which functions have two real number zeros by calculating the discriminant, b2 – 4ac. Check all that apply.f(x) = x2 + 6x + 8g(x) = x2 + 4x + 8h(x) = x2 – 12x + 32k(x) = x2 + 4x – 1 p(x) = 5x2 + 5x + 4t(x) = x2 – 2x – 15

A
f(x) = x2 + 6x + 8
B
g(x) = x2 + 4x + 8
C
h(x) = x2 – 12x + 32
D
k(x) = x2 + 4x – 1
E
p(x) = 5x2 + 5x + 4
F
t(x) = x2 – 2x – 15
2
Free Preview

f(x) = [___] x2 + [___] x + [___]

Answer:

-10

3

f(x) = [___] x2 + [___] x + [___]

Answer:

-2

4

–3–11 5

A
–3
B
–1
C
1 5
5

012

A
0
B
1
C
2
6

f(x) = [___] x2 + [___] x + [___]

Answer:

7

7

What are the values of x in the equation 4x2 + 4x – 3 = 0?

A
x = –1.5, 0.5
B
x = –0.5, –1.5
C
x =
D
x =
8

What is true about Marcus’s work? Check all that apply.

A
Marcus should have substituted –10 for b, not 10.
B
The denominator should be 1, not 2.
C
Marcus should have subtracted 4(1)(25) in the square root.
D
This equation, when solved correctly, only has 1 real number solution.
E
This equation has 2 real number solutions.
9

The negative x-intercept is at ([___] , 0).

Answer:

-1/3

10

What are the zeros of the function f(x) = x2 + 8x + 4, expressed in simplest radical form?

A
x = –4 ± 2
B
x = –4 ±
C
x =
D
x =
11

–1012

A
–1
B
0
C
1
D
2
12

The positive x-intercept is at ([___] , 0).

Answer:

4

13

–1012

A
–1
B
0
C
1
D
2
14

–1012

A
–1
B
0
C
1
D
2

Did you find these answers helpful?

More from this Course

Assignment
15 verified answers

Solving Quadratic Equations: Quadratic Formula

Assignment
15 verified answers

Solving Quadratic Equations: Quadratic Formula

Assignment
15 verified answers

Solving Quadratic Equations: Quadratic Formula