Factor.6x3 - 162y3
A. 6(x + 3y)(x2 - 3xy + 9y2)
B. 6(x - 3y)(x2 + 3xy + 9y2)
C. 6(x - 3y)(x2 + 9y2)
D. (6x - 3y)(x2 + 3y + 54y2)
Answer: B
Mathematics
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Use the appropriate formula to find the indicated figurate number.the 13th octagonal number
A. O13 = 162.5 B. O13 = 195 C. O13 = 481 D. O13 = 58.5
Mathematics
Write a chain rule formula for the following derivative.
for w = f(x, y, z); x = g(r, s), y = h(t), z = k(r, s, t)
A. 
= 
+ 
B. 
= 
+ 
C. 
= 
+ 
D. 
= 
Mathematics
Find the potential function f for the field F.F = 
i + 
j - 
k
A. f(x, y, z) = 
+ ln z + C
B. f(x, y, z) = 
+ C
C. f(x, y, z) = 
+ C
D. f(x, y, z) = 
+ C
Mathematics
Find the area of the SSS triangle ABC. If necessary, round the answer to two decimal places.a = 4, b = 5, c = 7
A. 10.01 B. 3.46 C. 16.01 D. 9.80
Mathematics