$42+36+14$
$2\tan^2x+3=2\sec^2x+1$
$2\sin\left(\frac{1}{2}x\right)=1$
$\int\left(\frac{sinx}{\sqrt{2+cosx}}\right)dx$
$4x^2-24x+16$
$15x^3y^5-20x^5y^2z$
$\int\left(x^5\left(2+x^6\right)^4\right)dx$
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