Question 469506
{{{(6.1x^2 -8.3x - 0.2) + (-7.8x^2 - 0.8x + 7.3)=6.1x^2 -8.3x - 0.2-7.8x^2 - 0.8x + 7.3=-1.7x^2-9.1x+7.1}}}