How do i answer this??

You can see that the common factor is 3 so 3×2 =6 so thats where root 2 comes from. You multiply and the radical goes away hence the answer is Combine like factors such that 18 × 8 =144 and the square root of 144 is 12 hence the answer is 12

Answer: the correct answer is 10step-by-step explanation: let the number be n, then the expression becomes,then“twelve more than the quotient of a number and two, decreased by four” iswhen n=4,we substitute 4 whetever we see n to get,we simplify to obtain,we further simplify to get,therefore the correct answer is c.