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Relation

In mathematics, a relation is a generalization of arithmetic relations such as "=" and "<" which occur in statements such as "5 < 6" or "2+2 = 4". See mathematical relation, binary relation and relational algebra.
A relational database stores data in relations called tables. Their data manipulation languages provide operations on tables that follow the relational algebra.
In law, a relation...

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Quadratic formula

... is to add a constant (i.e., in this case, a quantity that does not depend on x) to the expression to the left of "=", that will make it a perfect square trinomial of the ...