$48ab+32a^2b^3+16a^3$
$2x+y+z;\:x=7;\:y=4;\:z=1$
$6x^5+36x^4+54x^3$
$\left(2x+3\right)\left(8x^2-4x+3\right)$
$57=\left(n+2\right).\left(n+1\right)$
$12\left(-3\cdot4\right)-\left(5\cdot2\right)$
$3x^2+3x^2-27x-27$
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