Simplify the expression (5x^2/4y^4)^3

With an expression like this, you have to raise all the terms to the 3rd power. So the 5 will become ,  will become , the 4 will become  and finally, the  becomes . If you place all of these together in the same fraction, the new answer equivalent to the initial expression is 

The coefficient, 5 represents the length in relation to the problem.