$2a^5+162a^3$
$3xn-1\:+\:2xn+1\:+\:4xn-1\:-\:5xn+1\:$
$9u^2+48uy+64y^2$
$8ac\:-\:4ad\:-\:6bc\:+\:3bd$
$\frac{x^3-8x+10}{x+5}$
$-4-4-g$
$-136-147$
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