Question

WILL GET BRAILIEST FOR CORRECT ANSWER

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)​

Answer 1

x = ±
`√(20)`

Explanation:

Given

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

x = ±
`√(20)`

which can be simplified to

x = ± 2
`√(5)`

[ ± means plus or minus ]