Multiply.(-5x - 2)2
A. -5x2 + 20x + 4
B. -5x2 + 4
C. 25x2 + 20x + 4
D. 25x2 + 4
Answer: C
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Perform the indicated operation.
A. 400 B. 40 C. 0.0025 D. 25
Find all rational zeros and factor f(x).f(x) = 12x3 + 61x2 + 4x - 5
A. - 3, 4, -5; f(x) = (3x + 1)(4x - 1)(x + 5)
B. - 
, 1, -5; f(x) = (12x + 1)(x - 1)(x + 5)
C. - 
, 
, -5; f(x) = (3x + 1)(4x - 1)(x + 5)
D. - 3, 4, -5; f(x) = (x + 3)(x - 4)(x + 5)
Use the two-stage method to solve.Find x1 ? 0, x2 ? 0, x3 ? 0 such that x1 + x2 + x3 ? 125 x1 + x2 + x3 ? 75and z = 2x1 + 5x2 + 3x3 is maximized.
A. x2 = 100, x3 = 25, x1 = 0, z = 575 B. x1 = 125, x2 = 0, x3 = 0, z = 250 C. x1 = 0, x2 = 0, x3 = 125, z = 375 D. x2 = 125, x1 = 0, x3 = 0, z = 625
Use the indicated row operation to change the matrix.Replace R3 by 
R3.
A. 
B. 
C. 
D. 