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MAVERICK [17]
3 years ago
14

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

Mathematics
2 answers:
Katena32 [7]3 years ago
8 0

Answer:

-63

Step-by-step explanation:

sqrt(-49) = 7i

sqrt(-81) = 9i

7i × 9i

63i²

-63

Goshia [24]3 years ago
4 0

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

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