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Semmy [17]
3 years ago
7

Which choice is equivalent to the expression below?

Mathematics
2 answers:
djyliett [7]3 years ago
8 0
<span>B. 2i √5. To simplify √- 20 , it becomes √(-2)*(-2)*5, then √(-2)^5*5, which then becomes 2i because you cannot find the square root of a negative number. i means √-1, so √-20 is the same as 2i√5.</span>
Alexxandr [17]3 years ago
4 0
D) since
\sqrt{ - 20}  =  \sqrt{ 4 \times  - 5}  = 2 \sqrt{ - 5}  = 2 \sqrt{5 \times ( - 1)}  = 2 \ \sqrt{5} i
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Answer:

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Step-by-step explanation:

Given the equation: 36^{y-1}\times6^{2y-2}=1

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Simplified to:

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