Examples, solutions, and videos to help Algebra I students learn how to develop strategies for factoring quadratic expressions that are not easily factorable, making use of the structure of the quadratic expression.
Lesson 3 Summary
A polynomial expression of degree is often referred to as a quadratic expression.
Some quadratics are not easily factored. The following hints will make the job easier:
Check your answers by multiplying the factors to ensure you get back the original quadratic expression.
Lesson 3 Exercises
Factor the expanded form of these quadratic expressions. Pay particular attention to the negative and positive signs.
Lesson 3 Problem Set Sample Solutions
Factor the following quadratic expressions.
Lesson 4 Opening Exercises
Factor the following quadratic expressions:
6x2 + 5x - 6
6x2 + 7x - 20
-4x2 - 4x - 1
Lesson 4 Summary
While there are several steps involved in splitting the linear term, it is a relatively more efficient and reliable method for factoring trinomials in comparison to simple guess-and-check.
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