$\tan\left(x\right)\sqrt{1-x\:sin^{-2}}$
$a+a^1m-1$
$3x^2-34x+70$
$x^2y-2y=0$
$5x^3e^x+15x^2e^x=0$
$143+2\left(5x\right)-\left(5x\right)^2$
$\frac{\left(1-\cos\:\left(3x\right)\right)}{\sin\left(3x\right)}$
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