Question

PLEASE HELP!
Simplify the expression below in attachment.

Answer 1

Problem:

Answer 2

Hey, Fern!
Recognize that you're dealing with complex numbers here? In the given problem, 2+5i is complex; 2 is the real part and 5i is the imaginary part.
if we have 2+5i, 2-5I (with the opposite sign) is called the "conjugate" of 2+5i.

To "simplify" the given problem, multiply both the numerator and the denom. of the given fraction by the conjugate 2-5i.

Try this. Please draw your result, using the Draw feature, if possible, so that I (or others) could give you feedback on what you're doing.

Answer 3

the whole objective is to remove the imaginary operator, i, from the denominator. It's OK if you still have i in the numerator. Note that only the last 2 possible answers have any merit.

Answer 4

I just figured it out, and came up with C. is this correct? @mathmale