Simplify by removing grouping symbols and combining like terms.4(a + 6b) - [3 - 2(a - b)]

A. 6a + 26b - 3
B. 2a + 22b - 3
C. 2a + 8b - 3
D. 6a + 22b - 3

Answer: D

Mathematics

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Find Dxy.y = (1 - 3x) coth-1 

A.  - 3 tanh-1 
B. - x
C.  - 3 coth-1 
D. (1 - 3x) coth-1 

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Mathematics

Factor.27x6 + 64y6

A. (3x2 + 4y2)(9x4 - 12x2y2 + 16y4) B. (3x3 + 4y3)(9x3 - 12x3y3 + 16y3) C. (3x2 - 4y2)(9x4 + 12x2y2 + 16y4) D. (3x2 + 4y2)(9x4 + 16y4)

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Mathematics

Rationalize the denominator of the expression. Assume that all variables represent positive real numbers.

A.
B.
C.
D.

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Mathematics

Find the composition. If f(x) = 6x + 5 and g(x) = x + 3, find (g ? f)(x)

A. 6x + 23 B. 6x2 + 23x + 15 C. 6x2 + 23 D. 6x + 8

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Mathematics