Simplify. Be sure to rationalize the denominator. Assume that all variables represent positive real numbers.
A. 
B. 4
C. 4
D. 
Answer: A
Mathematics
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Find the term that should be added to the expression to form a perfect square trinomial. Write the resulting perfect square trinomial in factored form.x2 - 
x
A. 
; 
2
B. - 
x; 
2
C. 25; 
2
D. 
; 
2
Mathematics
Solve the system using the substitution method. If the system has no solution or an infinite number of solutions, state this.x - 3y = -39 y = -4x
A. (-3, 12) B. (3, -12) C. (-3, 11) D. (-4, 16)
Mathematics
Solve.x2 = -100
A. -10 B. ±10i C. 100i D. ±10
Mathematics
Graph the ellipse.100x2 + 16y2 = 1600
A. 
B. 
C. 
D. 
Mathematics