$a=2;d=3$
$9x^2+18x+10$
$12,5-4,02\:x\:3,1+12,43-7,56$
$32^30$
$8-12d^2-6d^4-d^5$
$32x^2+120x+90$
$\lim_{x\to1}\left(\frac{x^4-6x^2+8x-3}{x^2+3x+2}\right)$
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