a)AB=(3^3×3^0+3^1×3^0+2^2-2^5:2^4)/2=
AB=(9×1+3×1+4-2^1)/2
AB=(9+3+4-2)/2
AB=14/2=7 cm
b)BD=[8^16:(2×2^2×4^10)^2+2^3]
BD=[8^16:(2^3×2^20)^2+8]
BD=8^16:(2^23)^2+8
BD=(2^3)^16:2^46+8
BD=2^48:2^46+8
BD=2^2+8
BD=12 cm
AC=AB+BC
20=7+BC
BC=20-7=13 cm
BD=BC+CD
12=13+CD
CD=-1 cm
c)AM=AB+BM
AM=20:2=10 cm
10=7+BM
BM=3cm
