Tolong dong bantu saya

1. (2b-a) +(a. b)
=(2.3-(-2))+(-2.3)
=8+(-6)
=2

2. 56=2^3x7
36=2^2x3^3
64= 2^6
kpk= 4032
fpb= 4

3. 3^10 x 2^3

4. akar 3

5.