x2=?

A

x2

B

x

C

-x

D

± x

x2=? Correct Answer ± x

The square root of x2 = ± x

মোঃ আরিফুল ইসলাম

Feb 20, 2025

Related Questions

Let x̅1 and x̅2 (where x̅2 > x̅1) be the means of two sets comprising n1 and n2 (where n2 < n1) observations respectively. If x̅ is the mean when they are pooled, then which one of the following is correct?

A

x̅₁ < x̅ < x̅₂

B

x̅ > x̅₂

C

x̅ < x̅₁

D

(x̅₁ – x̅) + (x̅₂ – x̅) = 0

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