# number of roots   13 videos

• #### Cube Roots

How to find the cube root of a number.

cube root
• #### Estimating Square Roots

How to find square roots of integers.

estimating square root approximation principal square root perfect square
• #### Solving Quadratic Equations Using Square Roots

How to solve quadratic equations using square roots.

square root
• #### Vocabulary of Quadratic Polynomials

How to label the roots of a quadratic polynomial, solutions to a quadratic equation, and x-intercepts or roots of a quadratic function.

roots x intercepts solutions excluded values zeros function

• #### The Discriminant

How to calculate and interpret the discriminant of a quadratic equation.

discriminant x intercepts number of solutions
• #### Definitions and Applications of Absolute Value

##### AlgebraAbsolute Value

What is absolute value?

absolute value number line distance
• #### Defining Variables

##### AlgebraPre-Algebra

How to write variables to describe numbers.

variable

• #### Mean

##### AlgebraIntroduction to Statistics

How to calculate the mean, or average, of a list of numbers.

mean measure of center average
• #### Coin Word Problems

##### AlgebraWord Problems Using Systems of Equations

How to solve word problems about values and number of coins.

coins system of equations substitution
• #### Sum of Digits

##### AlgebraWord Problems Using Systems of Equations

How to solve a problem when asked to switch the digits of a 2-digit number.

sum digits word problem
• #### Scientific Notation

##### AlgebraExponents

How to move between scientific notation and standard notation of numbers.

power scientific notation