Answer:
88
Step-by-step explanation:
100-√81+3
or,100-√9square+3
or,100-9+3
or,100-12
•°• 88
94
100-the square root of 81+3
(the square root of something is a number multiplied by itself to get the number example √16=4 because 4x4=16)
100-9+3
91+3
