AnswersFL-1200330-Algebra 2 Sem 1 - FlexSolving Quadratic Equations by Factoring

Solving Quadratic Equations by Factoring Answers

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1
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What value(s) of x make the equation x2 - 18x + 81 = 0 true?

A
9
B
-9, 9
C
0, 9
D
0, -9, 9
2
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What are the solutions to the equation? -2, 162, -16-4, 8✔ 4, -8

A
-2, 16
B
2, -16
C
-4, 8
D
✔ 4, -8
3

Select all of the values that are solutions of x2 + 20 = 12x.

A
x = -10
B
x = -2
C
x = 2
D
x = 10
4

Which equation has solutions of 6 and -6?

A
x2 – 12x + 36 = 0
B
x2 + 12x – 36 = 0
C
x2 + 36 = 0
D
x2 – 36 = 0
5

What are the solutions of 8x2 = 6 + 22x? Check all of the boxes that apply.

A
x = -3
B
x =
Option B
C
x = 3
D
x = 6
6

How many times does the graph of 4x = 32 - x2 cross the x-axis?

A
0
B
1
C
2
7

When the product of 6 and the square of a number is increased by 5 times the number, the result is 4. Which equation represents this situation?

A
6x2 + 5x - 4 = 0
B
6x2 + 5x + 4 = 0
C
62x + 5 + x = 4
D
6 + x2 + 5x = 4
8

When the product of 6 and the square of a number is increased by 5 times the number, the result is 4. Select all of the values that the number could be.

A
Option
Option A
B
Option
Option B
C
Option
Option C
D
2
9

Which equation represents the situation? 2w² - w + 28 = 0✔ 2w² - w - 28 = 02w² + w - 28 = 02w² + w + 28 = 0

A
2w² - w + 28 = 0
B
✔ 2w² - w - 28 = 0
C
2w² + w - 28 = 0
D
2w² + w + 28 = 0
10

What did you include in your response? Check all of the boxes that apply.

A
Peta can only use the zero product property when the product of factors is equal to zero.
B
Peta must multiply x by (x - 5).
C
Peta must write the equation in standard form, then factor the expression.
D
Each factor must be set equal to zero, not 20.
11

A ball is thrown into the air with an upward velocity of 80 feet per second. The function h = -16t2 + 80t models the height h, in feet, of the ball at time t, in seconds. When will the ball reach the ground?

A
after 3 seconds
B
after 4 seconds
C
after 5 seconds
D
after 6 seconds
12

What is the length of the rectangle? 3 feet4 feet✔ 7 feet8 feet

A
3 feet
B
4 feet
C
✔ 7 feet
D
8 feet

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