Math Problem Statement
How do you factor a trinomial step by step
Solution
Factoring a trinomial involves breaking it down into simpler binomials. Let's go step by step using an example trinomial:
Example:
Factor the trinomial .
Step-by-Step Guide:
-
Identify the form
A standard trinomial is written as , where:- is the coefficient of
- is the coefficient of
- is the constant term
In our example, , we have:
-
Find two numbers that multiply to give and add to give
Here, we need two numbers that:- Multiply to
- Add up to
The numbers that satisfy both conditions are 2 and 3 because:
- (they multiply to 6)
- (they add to 5)
-
Rewrite the middle term
Rewrite the middle term as the sum of the two numbers found in the previous step:
-
Factor by grouping
Group the terms in pairs: Now, factor out the greatest common factor (GCF) from each pair: -
Factor out the common binomial
Both groups contain the common factor , so factor it out:
Final Answer:
The factored form of is .
Recap of the steps:
- Identify the form and coefficients.
- Find two numbers that multiply to and add to .
- Rewrite the middle term.
- Factor by grouping.
- Factor out the common binomial.
Would you like further details or have any questions?
Here are 5 related questions to consider:
- How do you factor trinomials when ?
- What if there are no two numbers that satisfy the condition?
- How can factoring help solve quadratic equations?
- How do you factor trinomials with negative constants?
- What are perfect square trinomials and how are they factored?
Tip: Always check your factors by multiplying them back to see if they match the original trinomial.
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Math Problem Analysis
Mathematical Concepts
Factoring
Algebra
Polynomials
Trinomials
Formulas
Trinomial: ax^2 + bx + c
Factoring by grouping: x^2 + bx + c = (x + m)(x + n)
Theorems
Fundamental Theorem of Algebra
Suitable Grade Level
Grades 8-10