136k views
3 votes
Please look at attached image

Please look at attached image-example-1

1 Answer

3 votes

Explanation:


{(3a - (1)/(6) b)}^(2) = 9 {a}^(2) - (1)/(2) ab - (1)/(2) ab + (1)/(36) {b}^(2)


= 9 {a}^(2) - ab + (1)/(36) {b}^(2)

User Hamid Haghdoost
by
3.8k points