$0.50+0.83$
$\frac{2tan\left(x\right)}{1+tan^2\left(x\right)}=sen\left(x\right)^2$
$x3\left(2x+3\right)$
$x^2+2x-20$
$\int6x^26^{2x}dx$
$3\tan\left(x\right)-5\csc\left(x\right)-3\sin\left(x\right)\tan\left(x\right)+5\sin\left(x\right)\sec\left(x\right)$
$15n^3+12n$
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