Solve the problem.Find an equation for the level curve of the function f(x, y) = 25 - x2 - y2 that passes through the point 
.
A. x2 + y2 = - 7
B. x2 - y2 = 7
C. x2 + y2 = 7
D. x2 + y2 = 32
Answer: C
Mathematics
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dx
A. csc x + C B. -sec x + C C. sec x + C D. -csc x + C
Mathematics
Find the real solutions of the equation.
= -4
A. 
B. 
C. 
D. 
Mathematics
Perform the indicated operation.Subtract (28x + 11) from (-8x2 - 14x + 11).
A. -8x2 - 42x - 22 B. 8x2 + 42x C. -8x2 + 14x + 22 D. -8x2 - 42x
Mathematics
Factor the expression.5(x + y)3 - 10(x + y)2 + 15(x + y)4
A. 5(x + y)[(x + y)2 - 2(x + y) + 3(x + y)3] B. 5(x + y)2[x + y - 2 + 3(x + y)2] C. 5(x + y)3(-2 + 3x + 3y) D. (x + y)2[5x + 5y - 10 + 15(x + y)2]
Mathematics