Question 3375
This is what the expression would look like.

{{{sqrt(xy+9)}}}

if x=7 and y=4, then xy+9 would be (7)(4)+9 which would be 28+9 which would be 37.

{{{sqrt (xy+9) = sqrt ((7)(4)+9) = sqrt (28+9) = sqrt (37) =6.082}}}