$2-4+2x+5+24$
$cotutanu-sin^2u=cos^2u$
$174+-76+-4$
$( x + 1 ) ( x - 8 ) = 0$
$3x=3$
$60a^2b^3+a^4b^5-10a^5b^{10}$
$\frac{x^3-8x+10}{x+5}$
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