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cestrela7 [59]
3 years ago
13

Factor completely 5x^2 − 40.

Mathematics
1 answer:
AVprozaik [17]3 years ago
8 0

Answer:

5(x^2−8

Step-by-step explanation:

There you go

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Negative 12 over negative 6, I forgot what to do
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Over means to divide (fraction).

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Step-by-step explanation:

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How to find the square root of complex numbers?? Find the square root of (6+8i) ??​
ivann1987 [24]

Answer:

2 \sqrt{2}  + i \sqrt{2}

Step-by-step explanation:

The square of a complex number is a complex number. Here, we have:

{(a + bi)}^{2}  = 6 + 8i

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We then have this system of equations:

{a}^{2}  -  {b}^{2}  = 6

2ab = 8

Solving this system:

ab = 4

b =  \frac{4}{a}

{a}^{2}  -  {( \frac{4}{a}) }^{2} = 6

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a = 2 \sqrt{2}

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