$29\cdot\lim_{x\to-2}\left(\frac{x^2-4}{x}\right)$
$\left(\:4x\:+\:2\right)\:\left(\:7x\:-9\right)\:$
$3.625+2\cdot t=4.175$
$5x-3x^2+1$
$5\sin^2\left(x\right)=3\sin\left(x\right)$
$-3.8\cdot4.44$
$45\cdot9$
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