$2b^4+3a^2-4a+5b\:;\:a=7\:;\:b=6$
$3x+12=x+16$
$11x^2=66$
$\lim_{x\to\infty}\left(\frac{3x+1}{2}\right)$
$\int\left(3-6x\right)cos\left(x-x^2\right)dx$
$\lim_{x\to0}\left(x^2+\sin\left(x\right)\right)$
$\left(2x+40\right)\left(2x+30\right)$
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