SOLUTION: how do i find imaginary answers??? Find all real or imaginary solutions to each equation 78. W^2 = -225

Question 59824: how do i find imaginary answers???
Find all real or imaginary solutions to each equation
78. W^2 = -225

Answer by tutorcecilia(2152) (Show Source): You can put this solution on YOUR website!
An imaginary number takes the form:
(i)(i)=-1, because =i,
In the real number world, the square root of a negative number cannot exist.
Example: (2)(2)=4 and the sqrt(4)=2
Example: (-2)(-2)=4 and the sqrt (4)=-2
When you multiply a number twice, the result will always be a positive number.
.
W^2 = -225
=[Take the square root of both sides]
=
=
w=15i

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