Question

M= (2-1/2) (2-1/2) + (-1) * {2-[3/2÷(2+1/4)]} + √25/4-4 

Answer 1

0.5*0.5+-1*{2-1.5/0.75}+5
0.25-1*2-1.125+5
-0.75*0.875+5
-0.65625+5
5.65625