Respuesta :

tomson1975

Greetings from Brasil...

According to the statement of the question:

X² = 20

Let's apply square root to both members

√X² = √20

X = √20

20 = 2² · 5   so   √20 = √2² · 5   =   2√5

X = √20 or X = 2√5 or X = 4.4721

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