2) (5²*6⁴*12²)/(15²*9³)=(5²*2⁴*3⁴*3²*2⁴)/(3²*5²*3⁶)=(5²*2⁸*3⁶)/(3⁸*5²)=2⁸/3²=256/9= 28 4/9
3)(12²*4³*6²)/(8²*18³)=(3²*4²*4³*2²*3²)/(2²*4²*2³*9³)=(3⁴*4⁵*2²)/(2⁵*2⁴*3⁶)=(2¹⁰*2²)/(2⁹*3²)=2¹²/(2⁹*3²)=2³/9=8/9
4) ( (3³)³*9⁷*2²)/(81⁵*2³)=(3⁹*3¹⁴*2²)/(3²⁰*2³)=(3²³*2²)/(3²⁰*2³)=3³/2=27/2
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2) (5²*6⁴*12²)/(15²*9³)=(5²*2⁴*3⁴*3²*2⁴)/(3²*5²*3⁶)=(5²*2⁸*3⁶)/(3⁸*5²)=2⁸/3²=256/9= 28 4/9
3)(12²*4³*6²)/(8²*18³)=(3²*4²*4³*2²*3²)/(2²*4²*2³*9³)=(3⁴*4⁵*2²)/(2⁵*2⁴*3⁶)=(2¹⁰*2²)/(2⁹*3²)=2¹²/(2⁹*3²)=2³/9=8/9
4) ( (3³)³*9⁷*2²)/(81⁵*2³)=(3⁹*3¹⁴*2²)/(3²⁰*2³)=(3²³*2²)/(3²⁰*2³)=3³/2=27/2