millershania45
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if x^2=20, what is the value of x?

a. +_ sqrt 10
b. +_sqrt 20
c. +_ 10
d. +_40

(the +_ is that weird symbol that has the plus sign on top of the underscore, i forget what its called)​

Respuesta :

Answer:

x = ± [tex]\sqrt{20}[/tex]

Step-by-step explanation:

Given

x² = 20 ( take the square root of both sides )

x = ± [tex]\sqrt{20}[/tex]

which can be simplified to

x = ± 2[tex]\sqrt{5}[/tex]

[ ± means plus or minus ]

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