tolong bsk sdh dikumpulkan pakai caranya

1. 10a^2 . -5a^3 = -50a5

2. 5x^2 . 10x^3 = 50x^5

3.8ab . 10ab = 80a^2b^2

4.5a(3a^2 - 2ab) = 15a^3 - 10a^2b

5.10 (2a-5b) + 8 (3a - 4b) = 20a - 50b+24a - 32b
20a+24a -50b -32b = 44a - 82b

6.5ab(2a + 3b) = 10a^2b + 15ab^2

7. -10ab^2 (2a + 3b) = - 20a^2b^2 - 30ab^3

8. 5 (a + 2b) - 4 (30 + b) = 5a +10b - 120 - 4b
= 5a+6b-120

9. 10a^2b^2 (3a^3b^4 + 5a^5b^5)
= 30a^5b^6 + 50a^7b^7

10. 8xy ( 10x^2y^3 + 5a^3b^6)
=80x^3y^4 + 40a^3b^6xy.


^ = pangkat