Difference of Two Squares

In mathematics, the difference of two squares, or the difference of perfect squares, is a squared (multiplied by itself) number subtracted from another squared number. It refers to the identity

in elementary algebra.

Read more about Difference Of Two Squares:  Proof, Geometrical Demonstrations, Generalizations

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    The axioms of physics translate the laws of ethics. Thus, “the whole is greater than its part;” “reaction is equal to action;” “the smallest weight may be made to lift the greatest, the difference of weight being compensated by time;” and many the like propositions, which have an ethical as well as physical sense. These propositions have a much more extensive and universal sense when applied to human life, than when confined to technical use.
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    The difference between human vision and the image perceived by the faceted eye of an insect may be compared with the difference between a half-tone block made with the very finest screen and the corresponding picture as represented by the very coarse screening used in common newspaper pictorial reproduction. The same comparison holds good between the way Gogol saw things and the way average readers and average writers see things.
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    An afternoon of nurses and rumours;
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    Silence invaded the suburbs,
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