Evaluate
2n^{2}-5n-4
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2n^{2}-5n-4
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\frac{2\left(n-\left(-\frac{1}{4}\sqrt{57}+\frac{5}{4}\right)\right)\left(n-\left(\frac{1}{4}\sqrt{57}+\frac{5}{4}\right)\right)\left(3n^{2}-2n+1\right)}{3n^{2}-2n+1}
Factor the expressions that are not already factored.
2\left(n-\left(-\frac{1}{4}\sqrt{57}+\frac{5}{4}\right)\right)\left(n-\left(\frac{1}{4}\sqrt{57}+\frac{5}{4}\right)\right)
Cancel out 3n^{2}-2n+1 in both numerator and denominator.
2n^{2}-5n-4
Expand the expression.
\frac{2\left(n-\left(-\frac{1}{4}\sqrt{57}+\frac{5}{4}\right)\right)\left(n-\left(\frac{1}{4}\sqrt{57}+\frac{5}{4}\right)\right)\left(3n^{2}-2n+1\right)}{3n^{2}-2n+1}
Factor the expressions that are not already factored.
2\left(n-\left(-\frac{1}{4}\sqrt{57}+\frac{5}{4}\right)\right)\left(n-\left(\frac{1}{4}\sqrt{57}+\frac{5}{4}\right)\right)
Cancel out 3n^{2}-2n+1 in both numerator and denominator.
2n^{2}-5n-4
Expand the expression.
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