$\left(4x+3\right)+\left(5x-7\right)+\left(4\right)+\left(5x-11\right)$
$x^2-16-64$
$x^2+36x+6$
$\frac{2x-8}{10}$
$3\cos\left(x+30\right)=\:2.121$
$6d^6\cdot8d^4$
$\int\frac{1}{2}sen\left(x^2\right)dx$
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