$\int\:\frac{5x+7}{x^2-4x+3}dx$
$2^3\cdot2^4\cdot2$
$\frac{1}{2}x^2+x^2-\frac{1}{3}x^2$
$\left(x+6\right)\left(2x^3+23x^2+78x+72\right)$
$3x+2y+z=5$
$\int\frac{\tan^{-1}x}{1+x^2}dx$
$-4k+11-4k+14$
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