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vivado [14]
3 years ago
14

What is the value of 5^3i^9 -125i -15i 15i 125i

Mathematics
2 answers:
Artemon [7]3 years ago
7 0

Answer:

125i

Step-by-step explanation:

When we have potential expression that include imaginary numbers, we have to consider some basic results, because these imaginary potential expression are cyclical.

We know that:

i=\sqrt{-1}

So, elevating both members to a third power, we have:

i^{3}=(\sqrt{-1} )^{3}=\sqrt{(-1)^{3} }=\sqrt{-1}=i

So, i^{3}=i, which is the beginning, that's why we say that it's like a cycle.

So, from the problem, we have:

5^{3} i^{9}

To solve this, we consider the operations from the beginning:

5^{3}=125; and

i^{9}=(i^{3})^{3}=(i)^{3}=i; because i^{3}=i

Therefore, the result would be 125i

lora16 [44]3 years ago
3 0

Good morning ☕️

______

Answer:

125i

___________________

Step-by-step explanation:

5³× i⁹ = 125 × i¹ = 125i

By the way :

i⁹ = (i⁴)²× i¹ = (1)²×i = i.

:)

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