$6x^2-45x+112=4x^2-25x+64$
$\left(a^3b-1\right)^2$
$45a^2+120ab+80ab^2$
$133-\left(-7\right)$
$0^2+2\cdot0\cdot3+3^2$
$\frac{e^{-x}}{4-e^{-2x}}$
$\int\frac{y}{\left(e^2y\right)}dy$
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