$4x-7y+25=0$
$25^4-40x^2+16$
$\left(2d-f+z\right)^2$
$8\cdot\left(4+6\right)\cdot2$
$\int_{-\infty}^2\left(x-2\right)e^2dx$
$\frac{cos^2\left(t\right)-sen^2\left(t\right)}{-sen\left(t\right)}$
$\frac{x^3-2x^2+2x-2}{x^2+1}$
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