9)
a) 8x³y^6
b) 6x³y^5
c) 25a²b^4 * a^6 * b³
= 25a^8 * b^7
d)-3xy²
e) (-2*a^(-1) * b^(-3))^(-3)
=(-1/8) *a³ * b^(9)
10)
a)
(9-1)/(3+1/3)
=8/(10/3)
=24/10=12/5
b)
(2-1)/1 = 1
c)
(2- 1/4)
=(8-1)/4 =7/4
11)
a) (3/4)³
b) 5³=125
c)
2/(1/64)= 2*64= 128
d)
2^(m+1+m+2-2m+2)
=2^5=32
e)
(1/4)²=1/16
