[tex](-7a^2+3a-9)-(5a^2-6a-4) =-7a^2+3a-9-5a^2+6a+4=\\\\ - 12a^2 + 9a - 5[/tex]
Answer:
12a^2+9a=5(it is correct trust me)
Step-by-step explanation:
I got it wrong cuz of the person on the top
