Getting started - Exponent and Root Rules

Algebra I: Getting started - Exponent and Root Rules

This is a free lesson from our course in Algebra I


	In this lesson, you'll go through definitions of exponent, root and radical notations. Basically exponents are used when a certain number raises to a certain power. For example: 3⁴, where 3 is the base and 4 is the exponent. You'll also see how roots and exponents are inverses of each other. Note: One thing to keep in mind -- by default, the radical sign means square root. An exponent is simply shorthand for multiplying that number of identical factors. So 4³ is the same as (4)(4)(4), three identical factors of 4 and x³ is just three factors of x, (x)(x)(x). (More text below video...)

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(Continued from above) One warning: Remember the order of operations. Exponents are the first operation (in the absence of grouping symbols like parentheses), so the exponent applies only to what it�s directly attached to. 3x³ is 3(x)(x)(x), not (3x)(3x)(3x). If you wanted (3x)(3x)(3x), you�d need to use grouping: (3x)³.

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