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8³:4²-2₃=(8*8*8):(4*4)-(2*2*2)=(512:16)-8=32-8=24 25²:(24²+7²)=(25*25):(24*24-7*7)=625:(576-49)=625:527=1⁹⁸₅₂₇ 10³-10²+9³=(10*10*10)-(10*10)+(9*9*9)=1000-10+729=990+729=1719 6³-2*4³-1³=(6*6*6)-2*(4*4*4)-(1*1*1)=216-2*64-1=216-128-1=88-1=87 15²:(13²-124)=15*15:(13*13-124)=225:(169-124)=225:45=5 8³:(4²-2³)=8*8*8:(4*4-2*2*2)=512:(16-8)=512:8=64