Using the identity $(a^{2} - b^{2}) = (a + b) (a - b)$ , evaluate $(0.8)^{2} - {(0.2)}^{2}$

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Solution

We have,
$(0.8)^{2} - (0.2)^{2}$
$= (0.8 + 0.2) (0.8 - 0.2)$
$= 1 \times 0.6$
$= 0.6$

Hence, this is the answer.

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