$7^4+7^5$
$\int-4ln\left(x^2-x+2\right)dx$
$2xe^{1+x^2-y^2}=0$
$\frac{2x+3}{x+1}>10$
$\sqrt{1-\cos\:^2\left(x\right)}$
$\left(4m^2-3n\right)\left(4m^2+6\right)$
$\left(2x^3-5x^2-6x+15\right)^1\times3-2x+4$
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