$\frac{sin2\left(t\right)+cos2\left(t\right)}{cos2\left(t\right)}$
$\frac{in\left|x^3+2x^2\right|+5e^{x^2+2x}}{sin^3\left(x^2+1\right)}$
$\left(5x^2-8\right)\left(5x^2+3\right)$
$2,89+0,11$
$x^2+5x-14$
$\sin\left(x+y\right)=\sin\left(x\right)\cos\left(y\right)+\cos\left(x\right)\sin\left(y\right)$
$\frac{16a}{b}+64c^2+\frac{a^2}{b^2}$
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