$9^2+4m^2$
$x^3-12x^2+54x-68$
$^{\:0}200-430^0$
$\frac{\frac{1}{3}m^2+\frac{7}{10}mn-\frac{1}{3}n^2}{m-\frac{2}{5}n}$
$\frac{\frac{1}{tanx}}{\left(\frac{1}{sinx}-sinx\right)}$
$8\csc\left(2x\right)\cot\left(2x\right)$
$\ln\left(x-4\right)-\ln\left(3x-10\right)=-\ln\left(x\right)$
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