32*93-32*85=32(93-85)=32*8=2³ *2^5=2^8=(2^4)²=16²-patrat perfect
2^83-4^41=2^83-(2²)^41=2^83-2^82=2^82(2-1)=2^82=(2^41)²- patrat perfect
11*(5^21-5^20-5^18)=11*5^18(5³-5²-1)=11*5^18(125-25-1)=11*5^18*99=11*11*9*5^18=11²*3²*(5^9)²- patrat perfect
semnul ^ inseamna la puterea
2. a:8=c⇒a=8c
a:12=d⇒a=12d
8c=12d
d=8;c=12
a=96
in mod asemanator procedezi pt celelalte