Find the following. Assume that the letter can represent any real number.

A. 14
B. 196
C. 14y
D. -14


Answer: A

Mathematics

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Factor the trinomial.20z2 + 7z - 6

A. (4z - 3)(5z + 2) B. (20z + 1)(z - 6) C. (4z + 3)(5z - 2) D. (20z + 3)(z - 2)

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Use Cramer's rule to solve the system. If D = 0, use another method to complete the solution.x - y + z = -8x + y + z = -6x + y - z = -2

A. {(-5, 1, -2)} B. {(-2, -5, 1)} C. {(-5, -2, 1)} D. ?

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Establish the identity.cot3x = cot x (csc2 x - 1)

What will be an ideal response?

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Determine whether the given value of x is a solution to the quadratic inequality.x2 + 4x < 2; x = -4

A. Yes B. No

Mathematics