Asked by Cynthia

The numbers iã5 and -iã5 are solutions to which equation?

a. x^2+ã5=0

b. x^2+5=0

d. x^2-5=0
Answered by Cynthia
thank you do you know how to do it though?
Answered by Steve
of course. I got the answer

you say √5i and -√5i are the solutions, so

(x-√5i)(x+√5i) = 0
x^2 - (√5i)^2 = 0
x^2 - 5i^2 = 0
but i^2 = -1, so
x^2 + 5 = 0
Answered by Cynthia
omg thank you soooo much (:
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