Answer:
4 a 2 − 5 a b − 6 b 2
Step-by-step explanation:
= 4a² − 5ab − 6b² is the answer :)
= a • 4a + a • 3b - 2b • 4a - 2b • 3b
= 4aa + 3ab - 2 • 4ba -2 • 3bb
= 4a² - 5ab - 6b²
