You can put this solution on YOUR website! (2x^5)^3 = 2^3x^5*3 = 8x^15
(-3x^4)^3 = -3^3x^4*3 = -27 x^12
we get 8x^15/-27x^12 = -8 x^(15-12)/27 = -8x^3 / 27
Hope the solution is clear to you.
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