(-5/12-13/20)²×45/32=
(-/25+39/tot supra 60)²×45/ numa 2la puterea5.=
(-64/60)²×45/numa 2 la puterea 5.=
64²/60²×45/ numa2 la puterea 5.=
2 la puterea 12/supra (2²×3×5)² ×45/ numa2 la a 5.=
2la a 12/s (2²)²×3²×5² ×45/ numa2 la a5.=
2 la a12/su. 2 la a4×3²×5² ×45/numa2la a5.=
2la a 8/ s 3²×5² ×45/numa 2 la a5.=
2³/s(3×5)² ×45.=
8/ supra numa15² ×45=
8/ sup.225 ×45=
8/ sup. 5...............
