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2 answers:
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Answer:
n = -4/3 or n = 3
Step-by-step explanation:
Multiply by 6 to eliminate fractions, then put into standard form.
3n^2 -5n -12 = 0
3n^2 -9n +4n -12 = 0 . . . . . separate -5n into two terms to facilitate factoring
3n(n -3) +4(n -3) = 0 . . . . . factor pairs of terms
(3n +4)(n -3) = 0 . . . . . . . . . factor out the common factor
n = -4/3 or 3 . . . . . . . values that make the factors be zero
