Tolong bantu darurat

6)
-5/6a + 2/3a = -5/6a + 4/6a = -1/6a

7)
3p/4 - (5p+2)/8 = 6p/8 - (5p+2)/8
= (6p-5p-2)/8 = (p-2)/8

8)
-2(4a^2 b^3)^3 = -2(64a^6 b^9) = -128a^6 b^9

9)
(-(a^2 b^3)/(2d))^4 = (a^8 b^12)/16d^4

10)
(3b-2)^2 - (b-3)^2 = (9b^2 - 12b + 4) - (b^2 - 6b + 9) = 9b^2 - 12b + 4 - b^2 + 6b - 9 = 8b^2 - 6b - 5