Simplify. Express your answer with positive exponents. Assume that all variables are nonzero.
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Solve the equation. First simplify the expression by combining like terms.
x + 1 = 
- 
x + 
A. 
B. 
C. 
D. 
Mathematics
Find the derivative of y with respect to x.y = -cos-1 
A. 
B. 
C. 
D. 
Mathematics
Add.
A. 121,490 B. 120,490 C. 120,390 D. 131,490
Mathematics
Find the focus and the directrix of the parabola.x = 2y2 + 8y + 5
A. 
; x = - 
B. 
; x = - 
C. (-1, -3); x = -5
D. (-5, -3); x = -7
Mathematics