$\int\left(\frac{1}{1-t^4}\right)dt$
$4x^2+40x+15.56$
$x+3=-6$
$8x^2+14x+3$
$x^2+18x+-18$
$\left(2a+4b+2c\right)+\left(c-3a+2b\right)$
$y''+7y'+12y=0$
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