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Verified answer
Kurang a dari b artinya b - a.5a² - 9ab - 4b²
-a² - 6ab + 3b²
-------------------- (-)
6a² - 3ab - 7b²
Verified answer
Mapel : MatematikaBab : Aljabar
5a² - 9ab - 4b² - (-a² - 6ab + 3b²)
= 5a² - 9ab - 4b² + a² + 6ab - 3b²
= 5a² + a² - 9ab + 6ab - 4b² - 3b²
= 6a² - 3ab - 7b²