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Alecsey [184]
2 years ago
12

The question is -x^2+18x-75.

Mathematics
1 answer:
alexdok [17]2 years ago
5 0
When you use -b/2a you plug in a and b. in this case it would be -18/-2 which coms out as 9. then you plug 9 into x. -9^2+18(9)-75 which comes out as -12. Your vertex is (9,-12) your Axis of semmetry would be 9.

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