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Foundations of Mathematics and Pre-Calculus 10
8. Polynomial factoring
8.2 Factoring polynomials by grouping
Factoring Polynomials by Grouping
Split a four-term polynomial into pairs, factor each pair, then factor out the shared binomial.
What You'll Learn
Factoring by grouping works on polynomials with four or more terms.
Group the terms into pairs, then factor the GCF from each pair.
If both groups share the same binomial factor, factor it out.
If the groups don't match, try reordering the terms first.
Check the result by multiplying the factors back together.
What You'll Practice
1
Grouping the first two and last two terms of four-term polynomials
2
Rearranging terms to find the most effective grouping strategy
3
Factoring out negative signs and variables from grouped terms
4
Extracting the common binomial factor to complete the factorization
Why This Matters
Factoring by grouping is essential for solving complex polynomial equations you'll encounter in algebra and calculus. This method unlocks your ability to factor four-term expressions that don't respond to simpler techniques, preparing you for advanced equation solving and rational expression work.
Before You Start — Make Sure You Can:
This Unit Includes
3 Video lessons
Practice exercises
Learning resources
Skills
Factoring
Polynomials
Grouping Method
Common Factors
Algebraic Manipulation
Binomials

BC Curriculum Aligned