Identify Variables: Identify a, b, and c in the quadratic expression 3s2+8s+4 by comparing it with the standard form ax2+bx+c.a=3b=8c=4
Find Multiplying Numbers: Find two numbers that multiply to a∗c (which is 3∗4=12) and add up to b (which is 8).The two numbers that satisfy these conditions are 2 and 6 because 2∗6=12 and 2+6=8.
Rewrite Middle Term: Rewrite the middle term 8s using the two numbers found in the previous step.3s2+8s+4 can be rewritten as 3s2+2s+6s+4.
Factor by Grouping: Group the terms into two pairs and factor by grouping.(3s2+2s)+(6s+4)Now factor out the common factors from each pair.The common factor in the first pair is s, and in the second pair is 2.s(3s+2)+2(3s+2)
Factor Common Factor: Notice that (3s+2) is a common factor in both terms.Factor out (3s+2) from the expression.(3s+2)(s+2) is the factored form of the quadratic expression.
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