84
Hope this helps ^-^
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Answer:
see below
Step-by-step explanation:
The leading minus sign tells you the graph opens downward. (x-3) in the squared term tells you the x-coordinate of the vertex is x=3. The graph that matches these characteristics is shown below.
Expand
-x-9-12x+9
Collect like terms
-13x
Answer: - 10
+ 3x - 4
Step-by-step explanation: