Identify Common Factor: First, look for a common factor in all terms.2f2, 18f, and 40 can all be divided by 2.So, factor out the 2.2(f2+9f+20)
Factor Quadratic Inside: Now, factor the quadratic inside the parentheses.We need two numbers that multiply to 20 and add up to 9.Those numbers are 4 and 5.So, f2+9f+20 can be factored as (f+4)(f+5).
Write Fully Factored Form: Finally, write down the fully factored form of the original expression. 2(f2+9f+20) becomes 2(f+4)(f+5).