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3 years ago

I need help for #1 (an explanation would be great too).

Mathematics

1 answer:

Ivan3 years ago

5 0

Answer:

±6i√2

Step-by-step explanation:

Recall that the square root of a negative number is imaginary, which is shown by the use of "i."

Examples: √4 = ±2; √4 = i√4 = ±i2

Then √72 = ±√36√2 = ±6√2, and

√(-72) = ± i√36√2 = ±6i√2

Note that this is identical to the result shown in the problem: √(36·2·(-1) )

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