3 years ago

What is (3-4i)^2? In complex numbers?

Mathematics

1 answer:

ANTONII [103]3 years ago

5 0

$(3-4i)^2=9-24i-16=-7-24i$

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anzhelika [568]

Answer:

Step-by-step explanation:

I've already told you, it is closer to 1 than 1.25

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2 years ago

Harry bought a sweater that only cost $5 when it normally costs $35. What percent was the discount? Provide an explanation. A. 1

erastova [34]

Answer:

D. 85.7%

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3 years ago

Read 2 more answers

Evaluate the expression when a= 4, b= - 2, and c= 7 - -> 5a - 9 (b - c)

ollegr [7]

Answer:

$65$

Step-by-step explanation:

Given the following question:

$5a-9(b-c)$
a = 4
b = 2
c = 7

In order to find the answer, we need to substitute the variables with the numbers given, and then solve using PEMDAS.

$5\times4-9\times(2-7)$
$2-7=-5$
$5\times4-9\times-5$
$5\times4=20$
$20-9\times-5$
$9\times-5=-45$
$20--45$
$20+45=65$
$=65$

Hope this helps.