Say true or false.
$0.2$ a root of the equation $x^{2} - 0.4 = 0$ .

True

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False

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Solution

The correct option is B False
Given equation is $x^{2} - 0.4 = 0$
$L H S = (0.2)^{2} - 0.4$
$= 0.04 - 0.4$
$= - 0.36 \neq R H S$
$∴ 0.2$ is not the root of the given equation.

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Question 6
Is 0.2 a root of the equation $x^{2}$ – 0.4 = 0? Justify your answer.

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