Question

http://prntscr.com/97uhga

Answer 1

is that correct?

Answer 2

@MARC_

Answer 3

@bibby

Answer 4

@imqwerty

Answer 5

you could check by replacing x with 11
and verifying it works by seeing if both sides are the same thing

Answer 6

\[\sqrt{5 \cdot 11-6}+4 \text{ is this equal to } 11 ?\]