Question

Evaluate the expression √−7/√ −6√−5 and write the result in the form a+bi.
I keep getting b as 0.483i but apparently its wrong?

Answer 1

Well, you need to work on using parentheses

√−7/√−6√−5 means (√−7/√−6)(√−5)
= 7i/6i * 5i
= 35i^2/6i
= 35/6 i = 5.83i

√−7/(√−6√−5) = 7i/-30 = -0.233i

0.483 = 29/60
Too bad you didn't bother to show <u>your</u> work, eh?

Or is there a typo in the problem?

Answer 2

Tried that answer as well but the website is till telling me its wrong. Could be a typo will have to check with the instructor.