Question

Multiply and simplify (6x +3y) (6x-3y)

Answer 1

36x^2 - 9y^2

Explanation:

Distribute

(6x+3y)(6x-3y)

6x(6x-3y) + 3y(6x-3y)

Distribute

6x(6x-3y )+ 3y(6x-3y)

36x^2 - 18xy +3y(6x-3y)

Distribute

36x^2 -18xy + 3y(6x-3y)

36x^2 - 18xy+ 18xy - 9y^2

Combine like terms

36x^2 -18xy + 18xy - 9y^2

36x^2 - 9y^2

Answer 2

36x^2- 9y^2

this is the correct answer after you simlify

36x^2-18xy+18xy-9y^2