Identify Coefficients: Identify the coefficients of the quadratic trinomial.The quadratic trinomial is in the form ax2+bx+c, where a, b, and c are constants.For 2x2+9x+10, we have:a=2b=9c=10
Find Multiplying Numbers: Find two numbers that multiply to a∗c (2∗10=20) and add up to b (9).We need to find two numbers, m and n, such that:m∗n=20m+n=9The numbers that satisfy these conditions are 5 and 4, because:2∗10=2002∗10=201
Write Middle Term: Write the middle term 9x as the sum of two terms using the numbers found in the previous step.We can express 9x as 5x+4x, which are the coefficients we found that add up to 9.So, the trinomial can be rewritten as:2x2+5x+4x+10
Factor by Grouping: Factor by grouping.Group the terms into two pairs:(2x2+5x)+(4x+10)Now factor out the common factors from each pair:x(2x+5)+2(2x+5)
Factor Common Binomial: Factor out the common binomial factor.We see that (2x+5) is a common factor in both terms, so we can factor it out:(2x+5)(x+2)