Factor the sum or difference of two cubes.729x3 + 1
A. (9x + 1)(81x2 - 9x - 1)
B. (9x + 1)(81x2 + 9x + 1)
C. (9x + 1)(81x2 - 9x + 1)
D. (9x + 1)(81x2 + 1)
Answer: C
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Multiply, and then simplify if possible. Assume all variables represent positive real numbers.(
+ -4)(
- 3
- 7)
A. 
- 11
+ 12
- 3
+ 28
B. -3
+ 
- 11
+ 12
+ 28
C. -3
- 10
+ 12
+ 28
D. -11
+ 12
- 3
+ 
+ 28
Solve the problem.A balloon used in surgical procedures is cylindrical in shape. As it expands outward, assume that the length remains a constant 90.0 mm. Find the rate of change of surface area with respect to radius when the radius is 0.070 mm. (Answer can be left in terms of ?).
A. 90.28? mm2/mm B. 90.14? mm2/mm C. 180.28? mm2/mm D. 180.0? mm2/mm
Multiply.0.0086 × 9.3
A. 0.07998 B. 0.0007998 C. 0.007998 D. 0.7998
Use a method of your choice to solve the equation.x3 - 12x2 + 48x - 70 = 0
A. x = -2.18 B. x = 5.82 C. x = 4 D. x = 2.18