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kupik [55]
3 years ago
12

Allan is deriving the quadratic formula, as pictured below. His work is incorrect. In which step did Allan first make an error?

Step 3, 4, 5 or 6?

Mathematics
1 answer:
Zina [86]3 years ago
8 0

Answer:

step 5 is the answer

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Check the picture below.

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