Write Complex Number in Standard Form

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Section 2.4
14, 18, 20

Question 14

4 + sqrt{-49}

4 + sqrt{49} • sqrt{-1}

4 + 7 • sqrt{-1}

Let sqrt{-1} = I

4 + 7i

Question 18

50 becomes 50 + 0i.

Question 20

-2i^2 + 4i

Let i^2 = -1

-2(-1) + 4i

2 + 4i

You say?

Can you do 22?

20210913_233644.jpg
 
sorry, ty for paying attention to it

sqrt(0.0025)sqrt(-1)
sqrt(25/10000)sqrt(-1)
sqrt(5^2)/sqrt(100^2))*i
(5/100)*i
0.05i
 
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