Seudónimo Seudónimo

15-10-2021
Mathematics

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PLEASE HELP IM TIMED! ILL MARK YOU BRAINLIEST!!

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Аноним Аноним

15-10-2021

Answer:

Both A and B

Step-by-step explanation:

r² - 2r = - 5

r² - 2r + 5 = 0

Here,

a = 1

b = - 2

c = 5

D = b² - 4ac

= ( - 2 )² - 4 ( 1 ) ( 5 )

= 4 - 20

D = - 16

r = - b ± √D

= - ( - 2 ) ± √-16

= 4 + √-16, 4 - √-16

= 4 + √- 4, 4 - √- 4

r = √- 4 + 4, - √- 4 + 4

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spiritualdesires spiritualdesires

15-10-2021

The answer is A because it corresponds with the numbers

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