kellerpaula kellerpaula

19-04-2020
Mathematics

contestada

Please help.
Simplify the expression using imaginary numbers.
√ -49 * √ -81

Respuesta :

Sarah06109 Sarah06109

19-04-2020

Answer:

-63

Step-by-step explanation:

i is equal to √ -1

√ -49

√ 49 * √ -1

7*i

7i

√ -81

√ 81 * √ -1

9*i

9i

7i*9i

63i^2

i^2 equals -1

63*-1

-63

Answer Link

amna04352 amna04352

20-04-2020

Answer:

-63

Step-by-step explanation:

sqrt(-49) = 7i

sqrt(-81) = 9i

7i × 9i

63i²

-63

Answer Link

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