Identify trinomial: Identify the trinomial that needs to be factored.The trinomial given is 3x2+16x+16.
Find two numbers: Look for two numbers that multiply to give the product of the coefficient of x2 term (3) and the constant term (16), which is 3×16=48, and add up to the coefficient of the x term (16).
Find numbers: Find the two numbers that meet the criteria from Step 2.The numbers 4 and 12 multiply to give 48 and add up to 16.
Write middle term: Write the middle term 16x as the sum of two terms using the numbers found in Step 3.3x2+4x+12x+16
Factor by grouping: Factor by grouping. Group the first two terms together and the last two terms together.(3x2+4x)+(12x+16)
Factor out common factor: Factor out the greatest common factor from each group. x(3x+4)+4(3x+4)
Factor out binomial factor: Factor out the common binomial factor.(x+4)(3x+4)