Which equation shows a valid step in solving 3sqrt2x-6+sqrt2x+6=0?

Olivia uses the work below to determine 55% of 720 which explains the error in olivia’s solution

1c) the number 131 is a term in the sequence defined by the explicit rule f(n)=5n-4. which term in the sequence is 131? 2a) write the first four terms of the function f(n)=n^2-1 2b) what is the 10th term of the sequence defined by the explicit rule f(n)=n^2-1 2c) the number 224 is a term in the sequence defined by the explicit rule f(n)=n^2-1. which term in the sequence is 224?

Solve for n? [tex]z = \frac{3}{4} mn[/tex]