Question

factorise the following (a +b)^2+(a+b)+18​

Answer 1

Answer:

Step-by-step explanation:

(a+b)^2+(a+b)+18

(a+b)+(a+b)+(a+b)+18

a+a+a+b+b+b+18

3a+3b+18=0

3a+3b=-18

hope it help you