Question

Divide: (7 + 4i) ÷ (2 + 3i)
I've been getting crazy numbers.

Answer 1

2i

Answer 2

That's not one of my choices.

Answer 3

what are your choices

Answer 4

A.) -2+i
B.) 2-i
C.) -2-i
D.) 2=i

Answer 5

ok hold on

Answer 6

D.) 2+i

Answer 7

Answer is B 2-1. You can use this website called Mathway.com and plug in your equations and it gives you the answers you need.

Answer 8

2-i

Answer 9

under the tab pre algrebra

Answer 10

\[\frac{ 7+4i }{ 2+3i}=\frac{ 7+4i }{ 2+3i} \times\frac{ 2-3i }{ 2-3i}=\frac{ \left( 7+4i \right)\left( 2-3i \right) }{ 2^2+3^2 }=\frac{ 14+12+8i-21i }{ 13 }=2-i\]

Answer 11

Wow. I didn't even think of writing it out that way. Thank you, now I actually can comprehend it. @CarlosGP

Answer 12

Oh and thank you @whydoihavetosignup1 for showing me a great site!

Answer 13

welcome. whenever you have a complex number in the denominator, just multyply numerator and denominator by the denominator´s conjugated. like this you will get a real number in the denominator

Answer 14

your welcome