$6-15+28-15+17-16-9+13$
$\frac{3sinx-2cos^2}{2+sinx}=2sinx-1$
$3x-1=\frac{5x}{3}+3$
$x+1>3$
$\int\frac{2x^2+6x-5}{x^3+4x^2}dx$
$\left(x^{a+1}y^{b-2}\right)^2$
$\frac{1}{6}\log\:_b\left(x^5y^7\right)-\frac{6}{7}\log\:_b\left(x^4y\right)$
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