$-12+25+47+-21$
$2b^2-2a^2-2b^2-a^2$
$5x+2-x+10$
$2^{x+2}+2^x=320$
$\int\left(-2e^x+\frac{3}{x}\right)dx$
$2cos\left(x+60\right)=1$
$\left(b+2\right)\left(x+5\right)$
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