$8,02-6,256$
$45.02\cdot1.56^2$
$\int\left(\frac{6x^2+x+55}{\left(x+1\right)\left(x^2+9\right)}\right)dx$
$cos^2x\cdot cscx-sinx$
$a^4-3a^2+9$
$\left(14a^2b^3-21a^3b+35ab\right)+\left(-7ab\right)$
$\sqrt{7}\tan\left(b\right)+6\sec\left(a\right)$
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