Multiply.(x + 3)(x2 - 3x + 9)
A. x3 - 6x2 - 6x + 27
B. x3 + 6x2 + 6x + 27
C. x3 + 27
D. x3 - 27
Answer: C
Mathematics
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Find all the second order partial derivatives of the given function.f(x, y) = 
A. 
= 
; 
= - 
; 
= 
= 
B. 
= - 
; 
= 
; 
= 
= 
C. 
= - 
; 
= 
; 
= 
= 
D. 
= - 
; 
= 
; 
= 
= 
Mathematics
Approximate the value using a calculator. Express answer rounded to three decimal places.3.73.06
A. 54.789 B. 62.686 C. 126.575 D. 11.322
Mathematics
Find the function value.Let g(x) = 
. Find g(-13.25).
A. 
B. 1
C. 
D. - 
Mathematics
Solve for the variable.-2y - 7 - 3(y + 1) = 6y - 7
A. y = 6
B. y = - 
C. y = - 
D. y = 
Mathematics