$\left(3w\:+\:5z\right)\:\left(3w\:-\:5z\right)$
$\int\frac{sen\:\left(x\right)\:+\:tan\:\left(x\right)}{cos\:\left(x\right)}dx$
$\sqrt{x^2+y^2};\:x=3;\:y=-4$
$x^2-60x+50$
$40y\:-\:4y$
$3x^2-6x-24$
$3x^2-5x+\frac{7}{x}+2e^3$
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