$-2,36-2,5$
$\int y^3\left(9+y^2\right)^{\frac{1}{2}}dy$
$1-\sin x=\frac{\left(\cos x\right)^2}{1+\sin x}$
$\int\frac{2x+9}{x^2+9x+2}dx$
$a^3+a^2b$
$3\left(x+1\right)^2=x+11$
$dr-rdx=0$
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