(bв7степени*bв5 степени) ²:(3b³)²

Question

(bв7степени*bв5 степени) ²:(3b³)²

Answer 1

(b⁷ *b⁵)² :(3b³)²=(b⁷+⁵)² :(3² *(b³)²)=b¹²*² :(9*b³*²)=b²⁴ :9b⁶=b²⁴⁻⁶:9=b¹⁸:9