# Factoring Expressions (Trial & Error)

Videos and lessons to help High School students learn to use the structure of an expression to identify ways to rewrite it. *For example, see x*^{4} – y^{4 }as (x^{2})^{2} – (y^{2})^{2}, thus recognizing it as a difference of squares that can be factored as (x^{2} – y^{2})(x^{2} + y^{2}).

### Suggested Learning Targets

- Use factoring techniques such as common factors, grouping, the difference of two squares, the sum or
difference of two cubes, or a combination of methods to factor completely.
- Simplify expressions including combining like terms, using the distributive property and other operations
with polynomials.

Common Core: HSA-SSE.A.2

Related Topics:

Common Core (Algebra)

Common Core for Mathematics

## Factor by Trial and Error (Leading Coefficient = 1)

Factoring trial and error

We will practice several problems with factoring by trial and error (short way) which is when the coefficient of the squared term is just 1.

Factoring a Trinomial with Leading Coefficient of 1 - The Basics

This video explains the basics on how to factor a trinomial in the form x^2 + bx + c.

Factor Trinomials When A equals 1

This video provides examples of how to factor a trinomial when the leading coefficient is equal to 1. (a = 1)

Factoring Basic Trinomials with a = 1

## Factor by Trial and Error (Leading Coefficient ≠ 1)

How to Factor Trinomials: Trial & Error Method

Factoring Trinomials using Trial & Error

Factoring Trinomials (A quadratic Trinomial) by Trial and Error.

Factoring Trinomials by Trial and Error - Ex 2.

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