Find all points where the function has any relative extrema or saddle points and identify the type of relative extremum.x2 - y2 + 4xy
A. Saddle point at (0, 0)
B. Relative maximum at (0, 0)
C. Relative minimum at (0, 0)
D. There are no relative extrema.
Answer: A
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Perform the indicated operations. Write answers using only positive exponents. Assume variables represent positive real numbers.(9z)1/5 ? (9z)-2/5
A. 
B. (81z)1/5
C. 
D. (9z)1/5
Find the standard form of the equation of the hyperbola satisfying the given conditions.Center: (6, 3); Focus: (4, 3); Vertex: (5, 3)
A. (x - 3)2 - 
= 1
B. 
- (y - 6)2 = 1
C. 
- (y - 3)2 = 1
D. (x - 6)2 - 
= 1
Find an equation of the line described. Write the equation in slope-intercept form if possible.Through (6, -21) and (-1, -7)
A. y = - 
x - 18
B. y = 
x - 24
C. y = -2x - 9
D. y = 2x - 33
Let U = {q, r, s, t, u, v, w, x, y, z}; A = {q, s, u, w, y}; 
and 
List the members of the indicated set, using set braces.B ? (A ? C)
A. {q, s, y, z} B. {q, w, y} C. {q, s, u, w, y, z} D. {q, r, w, y, z}