Jawab no 10, 20, dan 30 pake penyelesaian yg mudah dipahami yaa

10) x nya pindah ke atas maka pangkat(^) jadi minus
f(x) = x^-1 - 3x^-2
f'(x) = (-1)x^(-1-1) - (-2)3x^(-2-1)
= - x^-2 + 6x^-3
= - 1/x² + 6/x³

20) a³b² + a²b³
= a².b²(a + b)
= (a.b)²(a + b)
= (-3/1)²(-5/1)
= (9)(-5)
= -45

30) 2(a - 1) = (a + 2) + (2a - 10)
2a - 2 = 3a - 8
- 2 + 8 = 3a - 2a
6 = a
a + 2 = 6 + 2 = 8
a - 1 = 6 - 1 = 5
2a - 10 = 2(6) - 10 = 2
8, 5, 3 suku tengah ditambah - 1
8, 4, 3