Respuesta :

Answer:

the solution of:

x²=20

√x² = √(2² × 5)

x=2√5

So the answer is

A. x= ±2√5

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Solution of an equation [tex]x^{2} =20[/tex] is [tex]x= \pm 2\sqrt{5}[/tex].

What is solution of an equation?

The solution of an equation is the array of all values that, when replaced for unknowns, make an equation true.

Given

[tex]x^{2} =20[/tex]

[tex]x=\sqrt{20}[/tex]

[tex]x=\sqrt{4 \times 5 }[/tex]

[tex]x=\sqrt{2^{2} \times 5}[/tex]

[tex]x= \pm 2\sqrt{5}[/tex]

Solution of an equation [tex]x^{2} =20[/tex] is [tex]x= \pm 2\sqrt{5}[/tex].

Find out more information about solution of an equation here

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