stephg583 stephg583

15-02-2018
Mathematics

contestada

When 3+4i2+i is expressed in the form a+bi, what is the value of a?

Respuesta :

zrh2sfo zrh2sfo

15-02-2018

Multiplying and dividing with conjugate of 2+i in the given expression, we get(3+ 4i)(2-i)/(2+i)(2-i)=(6-3i+8i-4i^2)/(4-i^2)=(10+5i)/(4+1)=(10+5i)/5=2+i=a+biThus a=2

Answer Link

Otras preguntas

What are the characteristics of mass culture?

what does como eres tu mean in spanish?

what is force ?is it desirable or undesirable?

The Habsburg Empire did all of the following EXCEPT A. take control of Hungary, Croatia, and Slovonia. B. lose their Holy Roman Empire in Germany. C. remain a c

wats the 60% off a prize that is $20.00

let f(x)=2x-3 and g(x)= -x^2-1 find ( g o f) (x)

What are the operation sines that make this statement correct? 3_5_7_18_3=14

what does como eres tu mean in spanish?

Two diverging light rays, originating from the same point, have an angle of 5° between them. After the rays reflect from a plane mirror, what is the angle betwe

wats the 60% off a prize that is $20.00