Hello santiago and pari

are you two there?

What is the product of the radical expression. (7-2square root) (8+2 square root)

This is my question~~ ( r ^ 4 - 2r ^ 3 - 23 r ^ 2 - 4r - 32)÷(r+4) ~~ i must use long division to solve it : / i was wondering if anyone world like to solve it. and if so, share step-by-step explanations! you! ❤

Solve x+3y=6 and 4x-6y=6 by elimination . show work !