<PRE><B>Question 195724</B>
(1.1x^3+4.7x^2-3.5x)-(-4.4x^3-4.5x^2+70)



1.1x^3+4.7x^2-3.5x+4.4x^3+4.5x^2+70




5.5x^3+9.2x^2-3.5x+70




Ans: (1.1x^3+4.7x^2-3.5x)-(-4.4x^3-4.5x^2+70)=5.5x^3+9.2x^2-3.5x+70</PRE>