Factor completely. If the polynomial is prime, state so.81y2 - 18xy +x2

A. (x - 9y)(x + 9y)
B. (x + 9y)2
C. prime
D. (x - 9y)2


Answer: D

Mathematics

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Use the table of values of f to estimate the limit.Let f(x) = x2 - 5, find f(x).

A.
 ; limit = -15.0
B.
 ; limit = -5.0
C.
 ; limit = -3.0
D.
 ; limit = ?

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Use any method to evaluate the integral.dx

A. csc x + C B. -sec x + C C. sec x + C D. -csc x + C

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Find integer bounds for the roots of the following equation. ? ? Please enter your answer as two numbers, separated by a comma.

What will be an ideal response?

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Solve the problem.A fossilized leaf contains 36% of its normal amount of carbon 14. How old is the fossil (to the nearest year)? Use 5600 years as the half-life of carbon 14.

A. 8239 B. 28,899 C. 33,539 D. 3599

Mathematics