What is the square root of -1?

i

Step-by-step explanation:

It is imaginary, since if you try squaring numbers, ex: -1, 1,0,2 you always get a number bigger or equal to 0.

For years mathematicans argued weather the square root of -1 (or any negative number) should exist.

Then one day, a mathematician proposed a soulution, the square root of -1 could be i. Everyone liked that and so now the square root of -1 is i

there cannot be a square root of negative numbers since no two positive numbers multiplied can make a negative number and no two negative numbers multiplied can make a negative number because negative times negative equals positive.

Step-by-step explanation:

Hope this helps

b

step-by-step explanation:

u take $75 minus $60.the anwer/original($75)multiply by 100

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step-by-step explanation: