Polynomial Addition and Subtraction
(3x3+9x2+x-2)+(9x3+2x2-7x+9)-(2x3-10x2+10x-9)=3x3+9x2+x-2+9x3+2x2-7x+9-2x3+10x2-10x+9=(3x3+9x3-2x3)+(9x2+2x2+10x2)+(x-7x-10x)+(-2+9+9)=10x3+21x2-16x+16
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Copyright © Dayal D. Purohit, Ph.D.(Mathematics)