Jawabanmu

2014-08-17T19:55:03+07:00
5m² * 2m² = 10m⁴
5m² * 8m² = 40m⁴
5m² * (-5mn²) = - 25m²n²
2014-08-17T19:55:06+07:00
5m²(2m² + 8m² - 5mn²)
= 5m
²(10m² - 5mn²)
= 50m^4 - 5m³