Factor completely.80x9y7 - 80x7y5 + 48x2y3
A. 16x2y3(5x7y4 - 5x5y2 + 3)
B. 16(5x9y7 - 5x7y5 + 3x2y3)
C. 16x2(5x7y7 - 5x5y5 + 3y3)
D. -16x2y3(-5x7y4 - 5x5y2 - 3)
Answer: A
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Write the expression in terms of sines and/or cosines, and then simplify.csc x + tan2 x csc x
A. cos x - sin x
B. 
C. 
D. 
Solve the problem.A sawmill trims rough cut boards to look smooth. When a board is rough cut, it is 4 inches wide. When it is trimmed, it is 3
inches wide. How much width was trimmed off?
A. 
inch
B. 
inches
C. 
inch
D. 4
inches
For those which are polynomial functions, find the degree, the leading term, and the leading coefficient.f(x) = 3 + 5x - 7x3
A. not a polynomial function B. Degree: 3, leading term: -7, leading coefficient: 3 C. Degree: 3, leading term: -7x3, leading coefficient: -7 D. Degree: 0, leading term: 3, leading coefficient: 3
Simplify, if possible.
A. 
B. 
C. -1
D. - 