Factor completely. If the polynomial cannot be factored, write "prime."27x12 + 64y9

A. (3x4 + 4y3)(9x8 - 12x4y3 + 16y6)
B. (3x4 + 4y3)(9x8 + 12x4y3 + 16y6)
C. (3x4 - 4y3)( 3x4 + 4y3)
D. (3x4 - 4y3)(9x2 + 12x4y3 + 16y6b2)


Answer: A

Mathematics

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Replace the polar equation with an equivalent Cartesian equation.r2 sin 2? = 20

A. y = 
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C. y = 
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Evaluate the integral by changing the order of integration in an appropriate way.

A. 5 ln 2 ln cos 6
B. -  ln 2 ln cos 6
C. - 5 ln 2 ln cos 6
D.  ln 2 ln cos 6

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Find the book value after the given number of years, using the straight-line method. Round your answer to the nearest dollar.Find the book value at the end of the first year.Cost:$4,500Estimated life:6 yearsEstimated scrap value:$300

A. $700 B. $3,800 C. $3,750 D. $3,100

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Identify the axis of symmetry of the parabola.y = 2x2 + 20x + 53

A. x = 5 B. x = -5 C. x = 3 D. x = -3

Mathematics