Simplify the expression. Assume that all variables represent nonnegative numbers.
+ 2
- 7
A. -37
B. -5
C. -37
D. -5
Answer: A
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Find the simplest form of a second-order homogeneous linear differential equation that has the given solution.y = c1e9x + c2e4x
A. D2y + 13Dy + 36y = 0 B. D2y - 13Dy + 36y = 0 C. D2y - 13Dy - 36y = 0 D. D2y + 13Dy - 36y = 0
Find the value of the variable that satisfies the equation.-6x - 12x = -10
A. x = 
B. x = 8
C. x = 
D. x = 180
Solve.What is the minimum product of two numbers whose difference is 88?
A. -44 B. -22 C. -1936 D. -3872
Use Descartes' Rule of Signs to determine the possible number of positive real zeros and the possible number of negative real zeros for the function.P(x) = -8x4 + 5x3 - 9x2 + 8x - 9
A. 0 or 2 positive; 0 or 2 negative B. 0, 2, or 4 positive; 0, 2, or 4 negative C. 0, 2, or 4 positive; 0 negative D. 0 or 2 positive; 0, 2, or 4 negative