m2all7akazurDollmaso
m2all7akazurDollmaso m2all7akazurDollmaso
  • 12-12-2016
  • Mathematics
contestada

Simplify the given expression:

4/3-2i

Respuesta :

JcAlmighty
JcAlmighty JcAlmighty
  • 12-12-2016
The answer is [tex]\frac{12+8i}{13} [/tex]

[tex] \frac{4}{3-2i} = \frac{4(3+2i)}{(3-2i)(3+2i)} \\ \\ (a-b)(a+b) = a^{2} -b^{2} \\ \\ \frac{4(3+2i)}{(3-2i)(3+2i)} = \frac{4*3+4*2i}{3 ^{2}- (2i)^{2} }= \frac{12+8i}{9- (2)^{2}(i)^{2} }= \frac{12+8i}{9-4(i)^{2}} \\ \\ (i)^{2} = -1 \\ \\ \frac{12+8i}{9-4(i)^{2}}== \frac{12+8i}{9-4*(-1)}}= \frac{12+8i}{9+4} = \frac{12+8i}{13} [/tex]
Answer Link

Otras preguntas

1 + 1 is a calculus BC question im giving all my points for it.
What is the correct answer and why? Concise and simple explanation please!
A mother just found out that her daughter had sexual contact with another person, what is the appropriate thing to do?A. Talk to her and get her checked outB. T
he influence of the Virginia Declaration of Rights can be seen in the __________ and the ___
hey guys , can someone help me to do these exercises because I can't understand ​
what does the author of " a mountain calling " suggest about John muir's attitude about nature? use two details from the passage to support your responce
the scopes trial in the 1920s angered __________ a. Fundamentalists b. The President c. Charles Darwin
Please help as soon as possible. thanks in Advance
how do you find the mean absolute deviation
Use the graph at the right. Find the vertices of the image of QRTW for a dilation with center​ (0,0) and a scale factor of 3.