$\int\:y^3\left(2y^2-3\right)dy$
$1x^2-100$
$\sec\left(x\right)^2+\csc\left(-1.3\right)^2=\frac{1}{\sin\left(x\right)^2\cdot\cos\left(x\right)^2}$
$2tg^2x+1=3tgx$
$8^x=4096$
$2^3-3^3$
$\frac{2-2x}{x}\ge6$
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