assigning numbers to variables in answer choices 129 videos



Atomic Number  Isotopes
Chemistry The Atom
The meaning and uses of atomic numbers.
atomic number mass number isotopes ions 
Multiplying Complex Numbers
Algebra 2 Roots and Radicals
How to multiply imaginary numbers.
complex numbers multiplying i 
Quantum Numbers
Chemistry The Atom
How to identify a specific electron in an atom's electron cloud using quantum numbers.
quantum numbers electrons 
Adding and Subtracting Complex Numbers
Algebra 2 Roots and Radicals
How to add and subtract complex numbers.
adding and subtracting complex numbers 
Graphing One Variable Inequalities
PreAlgebra Solving Equations and Inequalities
Graphing one variable inequalities on a number line

Dividing Complex Numbers
Algebra 2 Roots and Radicals
How to rationalize the denominator when dealing with an imaginary number.
dividing by i complex numbers 
Introduction to Imaginary Numbers
Algebra 2 Roots and Radicals
How to define an imaginary number.
imaginary number i square root of a negative 
Solving a Linear System in Three Variables with a Solution
Algebra 2 Systems of Linear Equations
How to solve a system of linear equations in three variables.
solving a system in three variables elimination substitution 
Oxidation Number Method
Chemistry Electrochemistry
How to use the oxidation number method to understand oxidationreduction reactions.
oxidation number method oxidation states 
Dividing Complex Numbers
Precalculus Polar Coordinates and Complex Numbers
How to divide two complex numbers in trigonometric form.
complex numbers trigonometric form modulus argument conjugate 
Multiplying Complex Numbers
Precalculus Polar Coordinates and Complex Numbers
How to multiply two complex numbers in trigonometric form.
complex numbers trigonometric form modulus argument 
Solving a Linear System in Three Variables with no or Infinite Solutions
Algebra 2 Systems of Linear Equations
How to solve a system of linear equations in three variables that yields no, or many solutions.
solving a system in three variables elimination substitution