## Solving Quadratic Equations II: Taking Square Roots

Solving quadratic equations by taking the square root of both sides of the equation is explained. Some examples are provided to show the method step by step.

## Solving Quadratic Equations I: Factoring (Grouping)

Solving quadratic equations by factoring is explained with some examples. Two methods are introduced to factorize quadratic equations. Other methods of solving quadratic equations are also addressed.

## Solving Equations II: Radical Equations

This article explains the process of solving equations with radicals. Solving radical equations is performed by isolating radicals and raising both sides to a power equal to the index of the radicals one by one. The method is explained and ten examples are solved to illustrate solving equations with radicals.

## Solving Equations I: Linear Equations

This article explains the process of solving equations of linear form. Solving linear equations is performed by isolating the unknown variable. Two methods are introduced to fulfill isolation. The article also contains ten examples to illustrate solving equations.

## Nodal Analysis

The nodal analysis is explained. Necessary steps to solve a circuit with the nodal analysis is mentioned. A free ebook about nodal analysis is also included.

## Nodal Analysis – Circuit with Dependent Voltage Source

A 6-node circuit is solved with the nodal analysis. It contains one dependent voltage source, two independent voltage sources, two independent current sources and some resistors. The dependent causes two nodes to form a supernode.

## Nodal Analysis – 6-Node Circuit

A 6-node circuit is solved by the nodal analysis method and powers of voltage and current sources are calculated. The system of linear equations has three equations with three unknowns.