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The Power Rule is a shortcut in calculus to help you quickly find the derivative (rate of change) of any expression where a variable like x is raised to a power.

A rational algebraic equation is an equation in a mathematical sentence that establishes an equivalent relations between two expressions where one or more of their terms are rational expressions.

A rational expression is a fraction in which the numerator and/or the denominator are polynomials, and it is in lowest terms if all common factors from the numerator and denominator have been canceled.

A rational equation is just an equation that has one or more fractions with variables in the denominators.