$\int\frac{16}{x\left(x^2+16\right)}dx$
$\int\sin\left(14x\right)\sec^2\left(\cos14x\right)dx$
$26.45\cdot100$
$\cos^2\left(x\right)+\sec^2\left(x\right)=\tan^2x+\csc^2x$
$21x^22+11x-2$
$2a+3b-5a+6b$
$5x+2y-3x+4$
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