Factor
\frac{-17\left(\cos(x)\right)^{2}+18}{2}
Evaluate
\frac{-17\left(\cos(x)\right)^{2}+18}{2}
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\frac{\left(\cos(x)\right)^{2}+18\left(\sin(x)\right)^{2}}{2}
Factor out \frac{1}{2}.
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