(-3y\x)^3除以(-9x^4y)*(-x^2\y)^4

(-3y\x)^3除以(-9x^4y)*(-x^2\y)^4
(-3y\x)^3除以(-9x^4y)*(-x^2\y)^4

(-3y\x)^3除以(-9x^4y)*(-x^2\y)^4
原式=(-3y/x)³÷(-9x^4y)×(-x²/y)^4
=(-27y³/x³)×1/(-9x^4y) × x^8/y^4
=3y²/x^7 ×x^8/y^4
=3x/y²