$\frac{x^2}{y^2}-64$
$\left(-8x^2-5+x^4\:\right):\left(x+3\right)$
$20x+40y+z=10$
$\int\cos\left(4x-1\right)dx$
$20x^2-11x-3$
$\left(5a-3b+m\right)-\left(-a-26+3m\right)$
$3\cdot22\cdot4$
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