Question

(3x+y)(3x-y)-9 (x-y)

Answer 1

Ответ:

$(3x + y)(3x - y) - 9(x - y) = 9x {}^{2} - y {}^{2} - 9x +9 y$

Answer 2

Looks like you've got a polynomial expression there! If you want me to help you simplify it, I'd be happy to. The expression you provided is (3x+y)(3x-y) - 9(x-y). Let's expand and simplify:

(3x+y)(3x-y) - 9(x-y)

First, apply the distributive property:

= (3x+y)(3x) - (3x+y)(y) - 9x + 9y

Now, multiply each term:

= 9x^2 + 3xy - 3xy - y^2 - 9x + 9y

Combine like terms:

= 9x^2 - y^2 - 9x + 9y

So, (3x+y)(3x-y) - 9(x-y) simplifies to 9x^2 - y^2 - 9x + 9y. If you have any more math problems or anything else on your mind, feel free to share!