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2-7 Practice
By Patrick Silvey
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Last updated about 3 years ago
24 questions
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Question 1
1.
Two numbers multiply to -40 and add to -6. What is one of the numbers?
Question 2
2.
What is the other number?
Question 3
3.
Two numbers multiply to -40 and add to 6. What is one of the numbers?
Question 4
4.
What is the other number?
Question 5
5.
Two numbers multiply to -36 and add to 9. What is one of the numbers?
Question 6
6.
What's the other number?
Question 7
7.
Two numbers multiply to -36 and add to -5. What is one of the numbers?
Question 8
8.
What's the other number?
Question 9
9.
Draw a diagram to show that (x - 5)(x + 8) is equivalent to x
2
+ 3x - 40.
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View drawing
Question 10
10.
Question 11
11.
Question 12
12.
Question 13
13.
Question 14
14.
Question 15
15.
Question 16
16.
Question 17
17.
Question 18
18.
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Question 19
19.
Rewrite x
2
- 3x - 28 in factored form.
Question 20
20.
Rewrite x
2
+ 3x - 28 in factored form.
Question 21
21.
Rewrite x
2
+12x - 28 in factored form.
Question 22
22.
Rewrite x
2
- 28x - 60 in factored form.
Question 23
23.
Question 24
24.
+ or - ?
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Match each quadratic expression in standard form with its equivalent expression in factored form.
x
2
+ 2x - 35
(x + 5)(x - 7)
x
2
- 2x - 35
(x + 5)(x + 7)
x
2
- 12x + 35
(x - 5)(x + 7)
x
2
+ 12x + 35
(x - 5)(x - 7)
Which equation has exactly one solution?
A. x
2
= -4
B. (x + 5)
2
= 0
C. (x + 5)(x - 5) = 0
D. (x + 5)
2
= 36
Who is correct about the solution to x
2
= 7x
A. Elena: x = 7 is the only solution.
B. Lin: x = 0 and x = 7 are both solutions.
C. Neither: they are both incorrect.
