$\frac{3}{x^3+x-2}$
$y^2-4y=4y+16$
$a\:=\:-\:4\:;\:b\:=\:5;\:c\:=\:10-8\:a\:+\:9\:b\:+\:5\:c\:$
$\:\left(-5\right).\left(-8\right).\left(-4\right)-6.\left(-2\right)-\left(3.\right)\left(-4.\left(-2\right)\right)$
$\left(7a^2+2b^3\right)\left(7a^2\right)$
$7b+6b-6b$
$\:87+174+109$
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