$x^2+10x=39$
$48x^2-10x-28$
$\int\senx\sqrt[4]{1+\cos x}dx$
$\left(a+b^2\right)^5$
$\log\left(2x^2+5x-3\right)$
$3x^3+9x^2+9x+3$
$12x^2-31<2$
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