Factor completely. If the polynomial cannot be factored, write "prime."2x2 + 23x + 63
A. (2x - 56)(x + 7)
B. (x + 9)(x + 7)
C. (2x + 9)(x + 7)
D. (x - 56)(x + 7)
Answer: C
Mathematics
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Replace the polar equation with an equivalent Cartesian equation.r = 2 cot ? csc ?
A. y = 2x
B. y = 2x2
C. y = 
D. y2 = 2x
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Find the interval of convergence of the series.
A. 7 < x < 9 B. x < 12 C. 4 < x < 12 D. -12 < x < 12
Mathematics
Find an upper bound for the magnitude |E| of the error in the approximation f(x, y) ? L(x, y) at the given point over the given region R.
at 
; R: |x - 2| ? 0.2, |y - 1| ? 0.2
A. |E| ? 27.8784 B. |E| ? 21.8388 C. |E| ? 15.2064 D. |E| ? 21.5424
Mathematics
Identify the set as finite or infinite.
A. Infinite B. Finite
Mathematics