$-2sin2xsinx+cosx=0$
$45a^2-7ab+36ab-20^2+8$
$\lim_{x\to\infty}\left(\frac{4ln\left(t+3\right)}{\sqrt[5]{t}}\right)$
$0,35-0,09$
$\int3tsin^2xdx$
$12\left(7-11\right)+8-\left(6-7\right)-7+12$
$-\left(-8\right)+\left(+1\right)$
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