194)
$(x+2x^2+5)+(-3+4x^2-6x)=$
$=x+2x^2+5-3+4x^2-6x=$
$=(2+4)x^2+(1-6)x+2=$
$=6x^2-5x+2$
$(x+2x^2+5)+(-3+4x^2-6x)$
$x+2x^2+5-3+4x^2-6x$
$6x^2-5x+2$
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