(−150)150\frac{\left(-150\right)}{150}150(−150)
2sin(x)−sin(2x)2\sin\left(x\right)-\sin\left(2x\right)2sin(x)−sin(2x)
1⋅ 7−(−7)1\cdot\:7-\left(-7\right)1⋅7−(−7)
10x≤−910x\le-910x≤−9
csc(x)sec(x) =cot(x)\frac{csc\left(x\right)}{sec\left(x\right)\:}=cot\left(x\right)sec(x)csc(x)=cot(x)
9x2−279x^2-279x2−27
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