AnswersNJ-Algebra I CRUnit Test

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The formula for the area of a parallelogram is A = bh, where b is the base and h is the height.

Question illustration
A
–4x3 + 14x – 24 square centimeters
B
2x3 – 6x2 – 14x + 24 square centimeters
C
–4x3 – 14x + 24 square centimeters
D
2x3 + 6x2 + 14x + 24 square centimeters
22
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Which shows a perfect square trinomial?

A
50 y squared minus 4 x squared
Option A
B
100 minus 36 x squared y squared
Option B
C
16 x squared + 24 x y + 9 y squared
Option C
D
49 x squared minus 70 x y + 10 y squared
Option D
23

Which shows one way to determine the factors of x3 + 5x2 – 6x – 30 by grouping?

A
x(x2 – 5) + 6(x2 – 5)
B
x(x2 + 5) – 6(x2 + 5)
C
x2(x – 5) + 6(x – 5)
D
x2(x + 5) – 6(x + 5)
24

Factor x3 – 4x2 + 7x – 28 by grouping. What is the resulting expression?

A
(x2 – 4)(x + 7)
B
(x2 + 4)(x – 7)
C
(x2 – 7)(x + 4)
D
(x2 + 7)(x – 4)
25

Which products result in a perfect square trinomial? Select three options.

Question illustration
A
(negative x + 9)(negative x minus 9)
Option A
B
(x y + x)(x y + x)
Option B
C
(2 x minus 3)(negative 3 + 2 x)
Option C
D
(16 minus x squared)(x squared minus 16)
Option D
E
(4 y squared + 25)(25 + 4 y squared)
Option E

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