Question

Imaginary Numbers Help

Answer 1

http://webwork.tuhsd.k12.az.us/wwtmp/equations/58/e06c20d0518353d46bd3a3c5675a591.png

Answer 2

I need this in a + bi form

Answer 3

Hello @Lethal

Why don't you rationalize the denominator ?

Answer 4

Do you know how to rationalize ?

Answer 5

exactly i dont want a complex number in denominator

Answer 6

multiply by -2i?

Answer 7

multiply and divide by conjugate of denominator a

Answer 8

>>oops a is not there

Answer 9

ok did you try that ?

Answer 10

which one is denominator a?

Answer 11

a is not there i typed that accidently

Answer 12

multiply and divide by conjugate of -5-2i

Answer 13

so like *-5+2i/-5+2i?

Answer 14

exactly !

Answer 15

and use the property that

\[\large \boxed{(a+ib)(a-ib)=a^2+b^2}\]