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DerKrebs [107]
3 years ago
10

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

Mathematics
2 answers:
djverab [1.8K]3 years ago
8 0

Answer:

The y-axis is the correct answer.

dezoksy [38]3 years ago
4 0
Answer:

The axis of symmetry is x=6
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