STAAR Practice Test #8
Name:________________________
TEKS 10 (Polynomials)
Block:_________ Date:__________
2.(10B) Find the product of (x – 1) and (2x2 – x + 5)
1. (10B) Which expression is equivalent to:
3
5
2
3
2𝑥 ( 𝑥 + 1) + 3 ( 𝑥 − 2) ??
A 3𝑥 2 + 5𝑥 − 1
B
C 3𝑥 2 + 7𝑥 − 6
D
3
4
3
4
𝑥2 +
23
9
𝑥−6
5
𝑥2 + 𝑥 − 1
A. 2x3 + 3x2 + 6x – 5
C. 2x3 – 3x2 + 6x – 5
B. 2x3 – 3x2 + 5x – 5
D. 2x3 + x2 + 4x + 5
9
3. (10C) The area of a yard is given by the equation
y = x2 - 12x + 32. If the length of the garden is given by the
expression x - 4, what is the width of the yard?
4. (10A) Sarah wants to build two separate congruent pens for her
horses. Determine the amount of fencing she would need to
enclose BOTH pens.
5. (10A) Farmer Ted wants to build two separate congruent pens
for his piglets. The one pen is a triangle with sides measuring
5x - 2, 8x + 3 and 2x – 1. Then determine how much fencing
he would need for BOTH pens.
6. (10B) Maggie May wants to install a pool in her backyard.
The pool will have a width of 2x and length of 6x − 1. The
backyard has a width of 3x + 2 and length of 5x − 7 What is
the area of the yard that is left after the pool is installed?
7. (10A) Find the sum of (4a – 3b + 1) and (6a – 5b – 2)
8. (10A) Subtract (–a2 – 7a + 6) from (a2 – 4a – 6)
A. 10 a + 2b – 1
C. 10a – 2b – 2
A. 2a2 + 3a
C. 2a 2 + 3a – 12
B. 10a – 8b – 1
D. 10a + 8b – 1
B. 2a2 – 11a
D. –11a
9. (10B) Which expression is equivalent to:
10. (10B) In which step below does a mistake first appear in
simplifying the expression 0.5(−12c + 6) − 3(c + 4) + 10(c − 5)?
1
3𝑐 ( 𝑑 − 9) − 7(𝑐 + 1) + 𝑑(𝑐 + 4)?
3
𝐴. 2𝑐𝑑 − 34𝑐 4𝑑 − 7
C. 2𝑐𝑑 + 34𝑐 + 4𝑑 + 7
B. 2𝑐𝑑 − 7𝑐 − 4
D. 2𝑐𝑑 + 8𝑐 + 4
Step 1: −6c + 3 − 3(c + 4) + 10(c − 5)
Step 2: −6c + 3 − 3c −12 + 10(c − 5)
Step 3: −6c + 3 − 3c −12 + 10c − 50
Step 4: 7c − 41
A Step 1
B Step 2
C Step 3
D Step 4
Answer Key for Test #8
1
2
3
C
C
x-8
4
5
6
7
8
9
10
32x + 6
30x
3𝑥 2 + 10𝑥 − 14
10a – 8b – 1
2𝑎2 + 3𝑎 − 12
-34c +2cd +4d -7
D