$9xy+3x$
$f\left(x\right)=3^3-7^2-22x+8$
$\left(n-3\right)\left(n^2-6n+9\right)$
$5x^2z^3+55x^3z^4-78xz^3+13x^34^4$
$25\:x^2\:+\:30x\:-\:9$
$2^3\cdot5^3+\left(-4\right)\cdot\left(-5\right)+\left(-34+11\right)$
$-20+15-34-15+10$
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