Question

Factorise a square +b square+2ab-c square-d square-2cd

Answer 1

Answer:

(a+b+c+d)(a+b-c-d)                                       (。_。)

Step-by-step explanation:

   a^2 + b^2 + 2 ab - c^2 - d^2 - 2 cd        

         

=>(a+b)^2 - (c+d)^2

=>(a+b+c+d)(a+b-c-d)

I hope this helps u.

:)