$\int\:\frac{3x-4}{x^2+2x+4}dx$
$x^2y'\:+\:xy\:=\:3$
$\left(5n\right)^{3}$
$x^2+15x-54=0$
$\frac{sen3x-senx}{cos3x+cosx}$
$3\left(x-2\right)^2+2\left(y+1\right)^2+12\left(x-2\right)-4\left(y+1\right)+8=0$
$3b^4\cdot2b$
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