Question

a square +2a+ ab+ 2ab factorise​

Answer 1

Answer:

(a+1)²+(ab+1)²-2

Step-by-step explanation:

a²+2a+ab+2ab can be written as:

a²+2a+ab+2ab+1+1-2

On rearranging, (a²+2a+1)+(ab+2ab+1)-2

Using identity: (a+b)²=a²+2ab+b²

(a+1)²+(ab+1)²-2

I hope that this is the answer...