1. ## Calculate and solve

Calculate :
Deduct,in C , the resolutions of this equation :

2. Originally Posted by dhiab
Calculate :
Deduct,in C , the resolutions of this equation :
ok

$\left((3-2i)(3-2i)\right)^2=\left((9-6i-6i-4)\right)^2=(5-12i)^2$

you can continue it

the second one

$z^4=4(119+120i).....z=\left(\sqrt{(4(119))^2+(4(12 0))^2}e^{i(arctan(\frac{120}{119}+2n\pi)}\right)^{ \frac{1}{4}}$

$z=\left((4(13))^{\frac{1}{4}}e^{\dfrac{i(arctan(\d frac{120}{119})}{4}+\dfrac{n\pi}{2}}\right)$

take n=1,2,3,4 sub first 1 then 2 then 3 then 4

3. hELLO

=25-120i-144
=-119-120i
=-(119+120i)
Rmark : i2 = -1
You by cotinu the second question THANK YOU

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