$\sin\left(a\right)=\frac{\sqrt{12}}{2}$
$\left(d^2-4d+4\right)y=e^x$
$\left(7x^2-2\right)\left(7x^2+9\right)$
$\left|1+2\right|-3$
$\frac{6a^{m+2}}{-3a^{m-1}}$
$y+4=x^2-4x+4$
$7+5+9+12+8+3$
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