Question

2√x
=√(2^2)x
=√4x.
-√x
=-1√x
=√(-1)^2x
√x
Therefore
-√x=√x
Is this correct?

Answer 1

Answer:

no its incorrect

we cannot do this

Answer 2

$\boxed{\huge{\mathfrak{\red{Answer}}}}$

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Yes , This is obviously correct root is a both negative and positive term so this can be true.

Let x = 1

→ ± √x = ± √x

→ ± √1 = ± √1

→ 1 = 1 and -1 = - 1

Any positive real number has two equal roots : a positive root and a negative root

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