Factor.4x2 + 20xy + 25y2 - 49
A. (2x + 5y - 7)2
B. (2x + 5y + 7)2
C. (2x + 5y + 7)(2x + 5y - 7)
D. (2x - 5y + 7)(2x + 5y - 7)
Answer: C
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Find the derivative.
A. sin (x3)
B. 
x4 sin (x3)
C. -cos (x3) - 1
D. 3x2 sin (x3)
Solve the problem.Let a and b be positive numbers, and let G be their geometric mean. Express the geometric mean of a4 and b4 in terms of G.
A. G4
B. 4G
C. G
D. 
E. G2
Provide an appropriate response.With ordinary time, a loan dated June 12 and due in 150 days should be paid on:
A. September 10 B. September 12 C. October 12 D. November 12
Use properties of logarithms to expand the logarithmic expression as much as possible. Where possible, evaluate logarithmic expressions without using a calculator.log5
A. log5(x + 3) -log5x B. 7log5x -log5(x + 3) C. log5(x + 3) + 7log5x D. log5(x + 3) - 7log5x