$4^8x\:4^3$
$-x^3+x^2-x+1$
$0.02\cdot x^3-0.4\cdot x^2+10x+1000;\:x=100$
$\frac{3}{5}\cdot1.618$
$2-5+4-3-1+9$
$5d-7+2c-7d+3$
$n^2+10n+25$
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