Answer:
Step-by-step explanation:
[(20x^5y²)/(5x^-3y^7)]^-3
[(20/5)(x^5/x^-3)(y²/y^7)]^-3
[4(x^{5-(-3)})(y^{2-7})]^-3
[4(x^8)(y^-5)]^-3
[4(x^8)/(y^5)]^-3
1/[4(x^8)/(y^5)]³
1/([4(x^8)/(y^5)][4(x^8)/(y^5)][4(x^8)/(y^5)])
1/([2⁴(x^16)/(y^10)][2²(x^8)/(y^5)]
1/[(2^6)(x^24)(y^-15)]
(2^-6)(x^-24)(y^15)
(y^15)/(2^6x^24)
[(y^5)/(4x^8)]³
