[tex]\huge\text{Hey there!}[/tex]
[tex]\textsf{(9 - r)(2 - 3r)}[/tex]
[tex]\textsf{= 9(2) + 9(-3r) + 2(-r) + (-r)(-3r)}[/tex]
[tex]\mathsf{= 18 - 27r - 2r + 3r^2}[/tex]
[tex]\mathsf{= 3r^2 + 18 - 27r - 2r}[/tex]
[tex]\boxed{\large\text{COMBINE the LIKE TERMS}}[/tex]
[tex]\mathsf{= 3r^2 + 18 + (-27r - 2r)}[/tex]
[tex]\mathsf{= 3r^2 + 18 - 29r}[/tex]
[tex]\mathsf{= 3r^2 - 29r + 18}[/tex]
[tex]\boxed{\large\textsf{Therefore, your answer is: \large\boxed{\mathsf{3r^2 - 29r + 18}}}}\large\checkmark[/tex]
[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]