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Example:Solve for x in Equation using Laws of Exponents

 Post to:   Explanation:

Rational number

In mathematics, a rational number is any number that can be expressed as the quotient or fraction a/b of two integers, with the denominator b not equal to zero. (Our solved example in mathguru.com uses this concept)

Since b may be equal to 1, every integer is a rational number. The set of all rational numbers is usually denoted by a boldface Q.

http://en.wikipedia.org/wiki/Rational_number

# Exponentiation

Exponentiation is a mathematical operation, written as an, involving two numbers, the base a and the exponent (or power) n. When n is a positive integer, exponentiation corresponds to repeated multiplication; in other words, a product of n factors of a (the product itself can also be called power) just as multiplication by a positive integer corresponds to repeated addition ### Identities and properties

The most important identity satisfied by integer exponentiation is (Our solved example in mathguru.com uses this concept)

This identity has the consequence for a ≠ 0, and Another basic identity is http://en.wikipedia.org/wiki/Exponentiation