Evaluate
4+a-2a^{2}
Expand
4+a-2a^{2}
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\frac{-2\times 4a\left(a-\left(-\frac{1}{4}\sqrt{33}+\frac{1}{4}\right)\right)\left(a-\left(\frac{1}{4}\sqrt{33}+\frac{1}{4}\right)\right)}{4a}
Factor the expressions that are not already factored.
-2\left(a-\left(-\frac{1}{4}\sqrt{33}+\frac{1}{4}\right)\right)\left(a-\left(\frac{1}{4}\sqrt{33}+\frac{1}{4}\right)\right)
Cancel out 2\times 2a in both numerator and denominator.
-2a^{2}+a+4
Expand the expression.
\frac{-2\times 4a\left(a-\left(-\frac{1}{4}\sqrt{33}+\frac{1}{4}\right)\right)\left(a-\left(\frac{1}{4}\sqrt{33}+\frac{1}{4}\right)\right)}{4a}
Factor the expressions that are not already factored.
-2\left(a-\left(-\frac{1}{4}\sqrt{33}+\frac{1}{4}\right)\right)\left(a-\left(\frac{1}{4}\sqrt{33}+\frac{1}{4}\right)\right)
Cancel out 2\times 2a in both numerator and denominator.
-2a^{2}+a+4
Expand the expression.
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