BD=根号(AB^2-AD^2)=9DC=根号(AC^2-AD^2)=16BC=BD+DC=25BE=1/2BC=12.5DE=BE-BD=3.5AE=根号(AD^2+DE^2)=12.5
AE=12.5
(3-2)+1+5*4=22
4x5+3-(2÷1)=22
(1+2)*5+3+4=22
1-2+3+4*5=22