Question

4) Simplify
(i) (a2 - b2) - (2a2 - 2b2)​

Answer 1

Answer:

-a^2 +2b^2

Step-by-step explanation:

Answer 2

Answer:

1a2  - 1b2

Step-by- step

1. first we will solve the brackets                                                                                

      ( a2 - b2 ) - ( 2a2 - 2b2)

   =  a2 - b2    - 2a2 + 2b2 *    

      ( we will multiply - and - which will become +

       example:-  -( - 2b2)  =  + 2b2 )

( = multiply

    2.  we will arrange the like ( same ) terms

         a2 - b2  - 2a2 + 2b2

       = a2 - 2a2  - b2 + 2b2

  ( we will arrange like terms that are  same like a2 and 2a2)

   3. we will solve it .

     a2 - 2a2 - b2 + 2b2

   =  1a2  - 1b2

the answer is  1a2  - 1b2