I don't know how you expand it but the answer is 3x + 25 unless that's expanding.
Step-by-step explanation:
in the textbook column you can find the search symbol
there you can search for the hook you want
hope this is what you wanted
Angle PQR=90 degrees.
cos 52=PQ/14.72
PQ=14.72 x (cos 52)
PQ= 9 cm to the nearest cm