Question

Why square root of - 1 is i and cube root of - 1 is - 1

Answer 1

Answer:

Square root of -1 is i.

Now, cube root of -1 is -1.

this is bcoz

we can write -1 as

-1 x -1 x -1 (note: sign remains same)

=-1³

Hence, cube root = (-1³) ^(1/3)

= -1 only.

I hope u have understood.

Step-by-step explanation:

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