Answer:
[tex] {3ab}^{2} ( {4a}^{2} b + {2a}^{2} {b}^{2} - 3[/tex]
Step-by-step explanation:
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3ab²(4a³b + 2a²b³ - 3)
12a⁴b³+6a³b⁵-9ab²
= 4a³b(3ab²) + 2a²b³(3ab²) - 3(3ab²)
= 3ab²(4a³b + 2a²b³ - 3)
