Factor completely using the trial and error method to factor trinomials. If unfactorable, indicate that the polynomial is prime.6x2 - 21x - 12

A. 3(2x - 1)(x + 4)
B. (6x - 3)(x + 4)
C. 3(2x + 1)(x - 4)
D. prime


Answer: C

Mathematics

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A. 1 B. -1 C. 247 D. -247

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A. 82z5 B. 83z6 C. 38z6 D. 3 ? 8 ? z6

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Provide an appropriate response.Find all complex cube roots of z = 8i. Write each root in rectangular form.

A. 2i,  - i, -  - i
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C. -2i, -  - i,  - i
D. 2i,  + i, -  + i

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Express the rate in lowest terms.__________ mi/gal

Fill in the blank(s) with the appropriate word(s).

Mathematics