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OpenStudy (anonymous):
Factor completely: 3x2 + 12x + 7 I think it is prime.
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jimthompson5910 (jim_thompson5910):
You are correct. You multiply the first and last coefficients to get 3*7 = 21 Then you find two numbers that multiply to 21 and add to 12, but there are no such whole numbers. So that makes it prime.
OpenStudy (anonymous):
ok great thanks!
jimthompson5910 (jim_thompson5910):
np
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