$\frac{8x+12}{6x+7}$
$3x^2-2x+3=0$
$2\cos^{2}\theta+\cos\theta-1=0$
$-7+3\cdot\left(-8+17\cdot2\right)$
$\sqrt{89x^2}$
$x-7=2x+2$
$\lim_{x\to2}\left(36\right)$
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