Answer:
63x² - 31x - 15
Step-by-step explanation:
9x(7x - 3) - 4x - 15 ← multiply terms in parenthesis by 9x
= 63x² - 27x - 4x - 15 ← collect like terms
= 63x² - 31x - 15
Hii :))
[tex] \tt \: 9x(7x - 3) - 4x - 15 \\ = \tt \: 63 {x}^{2} - 27x - 4x - 15 \\ = \boxed{ \tt \: 6 {3x}^{2} - 31x - 15}[/tex]
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