Rational Numbers Review
In a rational number, the numerator can be any integer and the denominator can be any integer except zero. A rational expression is like a rational number. In a rational expression, the numerator and denominator can be any monomial or polynomial.
Roots of Variables
Simplifying radicals with cube and other roots and variables.
Approximating the Value of a Solution
Sometimes it makes sense to approximate the value of a solution. An example is given and the solution found.
Common Dimensions of Right Triangles
There some common right triangles in which all three sides are integers, such as a triangle with sides measuring 3, 4, and 5. Any triangle with sides that are multiples of these integers, called a similar triangle, you can be sure is a right triangl...
Examples of Rationalizing the Denominator
Problems involving rationalizing the denominator are presented and a shortcut is given.
Variables and the Greatest Common Factor
To factor completely, the greatest common factor must include every number and variable that is a factor of each term in the polynomial. A demonstration of how variables can be a part of the greatest common factor.