Asked by lexi

find all the REAL square roots of

a.)0.0064 b.)-0.0081

SHOW WORK PLEASE
Answered by Bosnian
a.)

0.0064 = 64 / 10,000

√0.0064 = √ 64 / √10,000 = 8 / 100 = 0.08


b.)

- 0.0081 = - 81 / 10,000

√- 0.0081 = √- 81 / √10,000 = √ [ 81 * ( - 1 ) ] / √10,000 =

√ 81 * √ ( - 1 ) / √100 = 9 * i / √100 = 0.09 i
Answered by Bosnian
My typo:

- 0.0081 = - 81 / 10,000

√- 0.0081 = √- 81 / √10,000 = √ [ 81 * ( - 1 ) ] / √10,000 =

√ 81 * √ ( - 1 ) / 100 = 9 * i / 100 = 0.09
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