$\int\ln\left(\frac{3+x}{3-x}\right)dx$
$2tan^2x\:-3\:=\:0$
$\left(2x^3+3x^2\right)^5$
$3y^2+5-y+2-5y^2$
$5gm^2\left(2g^2m-gm^3+4g^2m^2\right)$
$45y=450$
$f\left(t\right)=90-22\ln\left(t+1\right)$
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