Instructions: Choose the best answer.
_1. What is the sum of 8x² and 4x²?
A. 2x² B. 2x⁴ C. 12x² D. 12x⁴

_2. Add: 2−7 11 + 4?
A. 13a + 3b
B. -13a + 3b
C. 13a – 3b
D. -13a – 3b

_3. What is the difference if 2x+16 is subtracted from 6x–10?
A. 4x + 26
B. 4x – 26
C. 8x + 26
D. 8x – 26

_4. What is the sum of 5x² – 3x + 5 and (-x² – 6x – 2)?
A. 4x² – 9x – 7
B. 4x² – 9x + 3
C. 4x² – 3x + 3
D. 6x² – 3x – 3

_5. Which is the product of 10⁴ and −6⁴?
A. -60a⁴b
B. -60a⁴b⁵
C. -60a⁵b⁴
D. -60a⁵b⁵

_6. What is the product when 8r³s⁴t⁵ is multiplied to 9r⁴s⁶t²?
A. 17r⁷s¹⁰t⁷
B. 17r⁷s¹⁰t¹⁰
C. 72r⁷s¹⁰t⁷
D. 72r⁷s¹⁰t¹⁰

_7. Which will give the product of 18x⁴y⁷?
A. 3xy³(6xy⁴)
B. 3x²y³(6x⁵)
C. 3x²y⁵ (6x²y)
D. 3x⁴y⁵(6x²y²)

_8. Simplify:
(40m⁹n³)/ (4m⁶ n)
A. 10m³n²
B. 10mn
C. 10m⁶n²
D. 10m⁹n²

_9. What is the quotient of 18a⁴b³ ÷ (-3a⁴b²)?
A. -6ab B. -6b
C. 6ab D. 6b

_10. Which will give the quotient of 5x³y²?
A. 20x⁴y⁴ ÷ 4xy²
B. 20x⁴y² ÷ 4xy⁴
C. 20x⁴y³ ÷ 4x²y³
D. 20x⁴y⁴ ÷ 4x²y

_11. Which equation is true?
A. (8xy)² = 16xy
B. (-8xy)² = -16x²y²
C. –(8xy)² = 64x²y²
D. (8xy)² = 64x²y²

_12. If simplified, what would be the value of the expression (9rs7)³?
A. 729r³s²¹
B. 27r³s²¹
C. 27r⁴s¹⁰
D. 729r⁴s¹⁰

_13. What is (4x³y⁵z⁷)²?
A. 16x⁶y¹⁰z⁷
B. 16x⁶y¹⁰z¹⁴
C. 4x⁶y¹⁰z⁷
D. 4x⁶y¹⁰z¹⁴

_14. What is the result when 15x⁵ + 5x³ – 10x is divided by 5x?
A. 3x⁵ + x³ + 2x
B. 3x⁵ + x³ – 2x
C. 3x⁴ + x² + 4x
D. 3x⁴ + x² – 2

_15. What is the result of (x + 3)²?
A. x² + 9
B. x² + 6x + 9
C. x² + 6
D. x² + 3x + 9​