What is the complete factorization of r2 - 6r - 9s2 + 9? a) (r - 3 + 3s)(r - 3 - 3s) b) (r + 3 + 3s)(r - 3 - 3s) c) (r - 3 + 3s)(r - 3 + 3s)

The mathematical expression 9€ t means

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14