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Is 0.2 a root of the equation x^2 - 0.4 = 0? Justify your answer.

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Is 0.2 a root of the equation x2 - 0.4 = 0? Justify your answer.

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No, 0.2 is not a root of the equation x2 - 0.4 = 0.

If we substitute the value 0.2 in place of x in the equation, x2 - 0.4 = 0

⇒ (0.2)2 - 0.4 ≠ 0

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