Question

(a+b)2 – 4(a+b) – 12​

Answer 1

Answer:

2a+2b-4a+4b-12

=-2a-2b-12

Step-by-step explanation:

Answer 2

Answer:

(a+b)2 - 4(a+b)-12

2a+2b -4a+4b-12

2a-4a + 2b +4b-12

-2a + 6b - 12............ans.