Factor completely. If the polynomial is prime, state so.81x8 - 25y4
A. (9x4 + 5y2)(9x2 - 5y)(9x2 + 5y)
B. prime
C. (9x4 - 5y2)(9x4 + 5y2)
D. (9x2 - 5y)2(9x2 + 5y)2
Answer: C
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Solve the equation by using the square root property. Simplify all radicals.(3x + 3)2 = 36
A. {1, 3} B. {13, -13} C. {1, -3} D. {0, 1}
Find the mean.The six Cane brothers spent $41.95, $84.32, $81.13, $82.11, $54.77, and $86.38 on groceries. Find the mean grocery bill.
A. $71.78 B. $107.67 C. $74.13 D. $86.13
Find the sum or difference.
+ 
A. 
B. - 
C. 
D. 
Solve the problem.The length of the diagonal of a rectangle is given by 
where L and W are the length and width of the rectangle. What is the length of the diagonal, D, of a rectangle that is 89 inches long and 17 inches wide? Round your answer to the nearest tenth of an inch, if necessary.
A. 10.3 in. B. 38.9 in. C. 90.6 in. D. 87.4 in.