$\int\left(\frac{1}{\left(25x^2+49\right)}\right)dx$
$12x^2-10x-12$
$8\left(c^2x^2+2c^3x+c^4\right)^2$
$135-8.5\ln\left(100\right)$
$0.25x^2-0.3xy+0.09y^2$
$c^8-9$
$x\:+\:10=-15$
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