$8x^4-24x^2+18$
$0.0001\cdot\infty^2\cdot\frac{1}{2}$
$\frac{1}{2}\cdot14+5$
$5=\frac{0+x}{2}$
$2x-0x^1$
$\frac{4}{k^2-8k+12}=\frac{k}{k-2}+\frac{1}{k-6}$
$4\sin^2x+4=5$
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