$cos\left(x\right)-sen\left(x\right)=0$
$\sqrt[3]{2x+15}+16=11$
$\int\frac{2w-2w^3}{w^4-2w^2}dw$
$\frac{\left(5a\:+b\right)^2+\left(5a-b\right)^2}{50a^2\:+2b^2}$
$\int\frac{x^3-3x^2+1}{x^2-1}dx$
$x\:-\:3\:=\:-12\:$
$-10\cdot9-10+3$
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