Answer:
9x² - 4xy + [tex]\frac{4}{9}[/tex] y²
Step-by-step explanation:
Each term in the second factor is multiplied by each term in the first factor, that is
3x(3x - [tex]\frac{2}{3}[/tex] y ) - [tex]\frac{2}{3}[/tex] y(3x - [tex]\frac{2}{3}[/tex] y ) ← distribute both parenthesis
= 9x²- 2xy - 2xy + [tex]\frac{4}{9}[/tex] y² ← collect like terms
= 9x² - 4xy + [tex]\frac{4}{9}[/tex] y²
