$\int\left(\frac{3}{2+5x^2}\right)dx$
$x^8+y^7=2$
$-3.54\cdot3$
$81x^3+81x^2-72x-72$
$2a^2+4ab+\frac{25b^2}{4}$
$\int\sqrt{x}\left(9x^2-5\sqrt[3]{x}\right)dx$
$4x^5+2nx^2nx$
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