Identify Structure: Identify the structure of the trinomial.The trinomial is in the form ax2+bx+c, where a=5, b=11, and c=6.
Find Multiplying Numbers: Look for two numbers that multiply to ac (5×6=30) and add up to b (11).We need to find two numbers that multiply to 30 and add up to 11. The numbers 5 and 6 fit this requirement because 5×6=30 and 5+6=11.
Rewrite Middle Term: Rewrite the middle term 11x using the two numbers found in Step 2.The trinomial 5x2+11x+6 can be rewritten as 5x2+5x+6x+6.
Factor by Grouping: Factor by grouping.Group the terms into two pairs: (5x2+5x) and (6x+6).
Factor out Common Factor: Factor out the greatest common factor from each group.From the first group 5x2+5x, factor out 5x to get 5x(x+1).From the second group 6x+6, factor out 6 to get 6(x+1).
Write Final Factored Form: Write down the final factored form.Since both groups contain the common factor (x+1), the trinomial can be factored as (5x+6)(x+1).