Factor the expression.8x2(x2 + 5)2 - 2x(2x3 + 1)(x2 + 5)
A. 2x(x2 + 5)2(2x3 + 20x - 1)
B. 2x(x2 + 5)(2x3 + 20x - 1)
C. 2x(x2 + 5)(-2x3 + 4x2 + 19)
D. 2x(x2 + 5)(2x3 + 20x + 1)
Answer: B
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Solve the compound inequality and graph the solution set on a number line. Except for the empty set, express the solution set in interval notation.-4x + 1 ? 9 or 3x + 3 ? -9
A. (-?, ?)
B. [-4, -2]
C. [-2,?)
D. [-4, ?)
Answer the question.Which of the following is NOT listed as a suggestion to follow when preparing for an exam?
A. Reread the sections in the textbook that will be covered on the exam. B. Revisit your homework and the chapter review problems. C. Relax, and work on the exam thoughtfully. D. Test yourself.
Solve the problem.The temperature at the South pole was 21° at 8 am. At 3 pm, it was -34°. By how many degrees did the temperature drop?
A. by -13° B. by -55° C. by 13° D. by 55°
Perform the indicated operation and write the answer in simplest form.Find the average of 
, 
, and 
.
A. 
B. 
C. 
D. 