Find the product.(a + b - c)(a - 6b + 3c)

A. a2 - 7ab + 2ac - 6b2 + 9bc + 3c2
B. a2 + 5ab + 2ac - 6b2 - 9bc - 3c2
C. a2 - 5ab + 4ac + 6b2 + 9bc - 3c2
D. a2 - 5ab + 2ac - 6b2 + 9bc - 3c2

Answer: D

Mathematics

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Find all complex zeros of the polynomial function. Give exact values. List multiple zeros as necessary.f(x) = 3x4 - 10x3 + 20x2 - 40x + 32

A. - , -2, -2i, 2i
B. , 2, -4i, 4i
C. , 2, -i, i
D. , 2, -2i, 2i

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Mathematics

Write the decimal as a percent.0.39

A. 39% B. 390% C. 3.9% D. 0.039%

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Solve the formula for the specified variable.P = 2L + 2W for W

A. W = d - 2L
B. W = 
C. W = 
D. W = P - L

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Mathematics

If ? is an angle in the indicated quadrant, determine whether the given function is positive or negative.III, cot ?

A. Positive B. Negative

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Mathematics