Question

simplify. (a+b) (c-d) + (a-b) (c+d) + 2 (ad + bd)​

Answer 1

Step-by-step explanation:

(a+b)(c-d) + (a-b)(c+d) + 2(ab + bd)

ac - ad + bc - bd+ ac + ad -bc -bd + 2ab + 2bd

= 2ac + 2ab

= 2a( b + c)