Question 89944

    Add- 5b - 8b + 2b^2 and 3b^2 - 7b^3 + 5b. 
Remove the parenthese and simplify if possible. 
8d - ( -7c - 2d) 
Subtract- 4x - 2x^2 + 4x^3 and 4x^3 + x - 3x^2. 

Add using the vertical method. 
5x^2 + 2x - 4, x^2 - 2x - 3, and 2x^2 -x - 3. 


   1)   5b-8b+2b^2+3b^2-7b^3+5b
      5b+5b-8b+2b^2+3b^2-7b^3
      b(5+5-8)+b^2(2+3)-7b^3
       2b+5b^2-7b^3

   2)    8d-(-7c-2d) = 8d+7c+2d = 8d+2d+7c = 10d+7c


   3)4x-2x^2+4x^3-(4x^3+x-3x^2)

     4x-2x^2+4x^3-4x^3-x+3x^2
     3x^2-2x^2+4x-x = x^2+3x

   4)5x^2+2x-4
      x^2-2x-3
      2x^2-x-3 
    adding the co-efficients of like terms ,we get

      8x^2-x-10