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kati45 [8]
3 years ago
15

Need help , don’t understand !!

Mathematics
1 answer:
mixer [17]3 years ago
5 0

Quadratic Formula is (-b ±√(b²-4ac))/2a

With that being said:

y=2x²-5x-1 is in the correct form of ax²+bx+c

Now just plug in:

5±√(25-4(2 x-1))

5± √25+8

(5±√33)/2(2)

Answer is D

100% Sure


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