Cara kerjanya dan jawabannya

No. 1
(x^-6.y^-6.z^9)^2/3
=x^-4.y^-4.z^6
=z^6 /x⁴y⁴ (yg D)
No. 2
5√27 - 4√48 + √75 - 3√12
=5√9.3 - 4√16.3 + √25.3 - 3√4.3
=15√3 - 16√3 + 5√3 - 6√3
=-2√3