$\left(a^2+\frac{1}{a^2}\right)$
$4x+12.5=7x+8$
$\int10\cdot\cos\left(x\right)dx$
$-42\cdot2$
$12.4\cdot8.5$
$36x^2-4=0$
$\ln\left(x\right)=24$
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