quintasiahaskin
19.04.2020 •
Mathematics
Please help.
Simplify the expression using imaginary numbers.
√ -49 * √ -81
Solved
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Ответ:
-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
Ответ:
-63
Step-by-step explanation:
sqrt(-49) = 7i
sqrt(-81) = 9i
7i × 9i
63i²
-63
Ответ:
38 degrees
Step-by-step explanation:
Alternate Exterior Angles Theorem