$-4\left(x+6\right)+2\left(x-2\right)$
$4x^2-2x-3+6x^2+x-6+2x^2-x+3$
$\int\frac{1}{4x^{2}+48x+148}dx$
$7j^5i^7+j^5i^7$
$\int13xsin\left(x\right)cos\left(x\right)dx$
$3x^2+7y^2+4x^2-5y^2$
$\sqrt{81}+5.1$
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