Iam struggling with this question, and i am kinda stuck. can anyone ?

Find the roots of the equation below. x^2 - 6 + 9 = 0

2/3(-6y+9x) expand each expression using the distributive property

Asequence has a common ratio of and f(5) = 81. which explicit formula represents the sequence? f(x) = 24 f(x) = 16 f(x) = 24 f(x) = 16