Math

Root, in mathematics, a solution to an equation, usually expressed as a number or an algebraic formula. In the 9th century, Arab writers usually called one of the equal factors of a number jadhr (“root”), and their medieval European translators used the Latin word radix (from which derives the adjective radical).

​The power (or exponent) of a number says how many times to use the number in a multiplication. It is written as a small number to the right and above the base number. In this example the little "2" says to use 8 two times in a multiplication: 8 2 = 8 × 8 = 64. But power can also mean the result of using an exponent, so in the previous example "64" is also called the power. Fourth power. In arithmetic and algebra, the fourth power of a number n is the result of multiplying four instances of n together.

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