Question 1 Multiply. Write the result in scientific notation.
(1.8 • 101)(7 • 105)
A. 1.26 • 107
B. 8.8 • 106
C. 8.8 • 105
D. 1.26 • 106
Question 2
Add or subtract.
(7x2 – x – 2) – (–6x3 + 3)
A. 6x3 + 7x2 – x – 5
B. –6x3 + 7x2 – x + 1
C. –x3 – x – 5
D. x2 – x + 1
Question 3
Simplify the expression.
(2k + 1) (k – 4)
A. 2k2 – 7k + 4
B. 2k2 –3k + 4
C. 2k2 + 9k + 4
D. 2k2 – 7k – 4
Question 4
For questions 2 and 3, simplify each polynomial.
3x2 + 6 – 2x + 5x – 4x2 + 9
A. –x2 + 3x + 15
B. 7x2 + 3x + 3
C. x2 – 3x + 15
D. –x2 + 7x + 15
Question 5
What are the coefficients in the polynomial 4x² + 3x – 3?
A. 4, –3, –3
B. 4, 3
C. 4, 3, 3
D. –4, –3
Question 6
Simplify the expression.
3k2(–2k2 – 4k + 7)
A. –6k3 – k + 10k
B. –6k4 – 12k3 + 21k2
C. k4 – k3 + 10k2
D. 6k4 – 12k3 + 10k2