Factor completely. Make sure you factor out the GCF first if possible. If prime, so state.21x3 - 6x2 + 12x
A. 3x(7x2 - 2x + 4)
B. x(21x2 - 6x + 12)
C. 3(7x3 - 2x2 + 4x)
D. 3x(7x3 - 2x2 + 4x)
Answer: A
Mathematics
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Express the sum in sigma notation.7 + 8 + 9 + 10 + 11 + 12
A. 
B. 
+ 7
C. 
k
D. 
Mathematics
Determine the standard equation of the ellipse described.Foci at (-4, 2) and (-4, -4); length of major axis is 10 units.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Simplify.(64 - 20) ? [(80 + 15 ÷ 5) - (7 ? 7 - 1 ? 1)]
A. 1597 B. 1540 C. 1504 D. 1640
Mathematics
Solve the problem.The exact solution to an exponential equation such as 2x = 3 can be expressed in three forms: log23, 
, or 
. Give the exact solution to the following exponential equation in three forms.3x = 15
A. log15 3; 
; 
B. log315; 
; 
C. log15 3; 
; 
D. log315; 
; 
Mathematics