Multiply.(x + 3)(x2 - x + 7)
A. x3 + 2x2 + 21
B. x3 + 21
C. x3 + 4x2 + 10x + 21
D. x3 + 2x2 + 4x + 21
Answer: D
Mathematics
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Find the vertices of the ellipse.3x2 + 5y2 - 24x + 60y + 213 = 0
A. (-6.2, 6), (-1.8, 6) B. (6.2, -6), (1.8, -6) C. (5.4, -6), (2.6, -6) D. (-2.6, 6), (-5.4, 6)
Mathematics
Use integration by parts to establish a reduction formula for the integral.
, n ? 1
A. 
= secn-2 x tan x + (n - 2) 
B. 
= secn-2 x tan x - (n - 2) 
C. 
= 
secn-2 x tan x + 
D. 
= 
secn x tan x - 
Mathematics
Divide. Write a mixed numeral for the answer.
A. 98
B. 98
C. 99
D. 99
Mathematics
How many natural numbers are between -9.5 and 2.5 on the number line?
Fill in the blank(s) with the appropriate word(s).
Mathematics