Simplify the expression. Assume that all variables represent nonzero integers.(x(-3a - 4))-1
A. 
B. x(7a + 7)
C. 
D. x(3a + 4)
Answer: D
Mathematics
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Solve the problem.Find the equation for the tangent plane to the surface 
at the point 
A. z = 0 B. x + y + z = 0 C. x - y = 0 D. x + y = 0
Mathematics
Determine whether the statement is true or false.sin 120° = 2 sin 60° cos 60°
A. True B. False
Mathematics
Find all specified roots.Cube roots of 8
A. 2, -1 + 
i, -1 - 
i
B. 2, 1 + 
i, -1 - 
i
C. 2, -1 - 
i, 1 - 
i
D. 2, 1 + 
i, 1 - 
i
Mathematics
Solve the system of equations.
x + 
y - 
z = -3- 
x - 
y - 
z = 4
style="vertical-align: -17.0px;" />x + 
y + 
z = 17
A. 
B. 
C. 
D. 
Mathematics