$33-2y+8$
$0,117\:a\:-\:0,35b\:-\:2,25b\:-\:1,1b\:+\:3,04a$
$x^2+15x+3=0$
$\frac{\cot\left(x\right)\sec^2\left(x\right)}{1+\cot^2\left(x\right)}=\tan\left(x\right)$
$\int\left(\sqrt{\frac{1}{4}-x^2}\right)dx$
$4x^2-\:2yx^2$
$-48-\left(15-\left(43-38\right)+27\right)$
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