Identify a, b, c: Identify a, b, and c in the quadratic expression 3t2+8t+4 by comparing it with the standard form ax2+bx+c.a=3b=8b0
Find two numbers: Find two numbers that multiply to a∗c (3∗4=12) and add up to b (8).We need to find two numbers that multiply to 12 and add up to 8.The numbers 2 and 6 satisfy these conditions because 2∗6=12 and 2+6=8.
Rewrite middle term: Rewrite the middle term 8t using the two numbers found in the previous step.The expression 3t2+8t+4 can be rewritten as 3t2+2t+6t+4 by splitting the middle term.
Factor by grouping: Factor by grouping. Group the first two terms and the last two terms.(3t2+2t)+(6t+4)Now factor out the common factors from each group.From the first group, we can factor out t: t(3t+2)From the second group, we can factor out 2: 2(3t+2)
Notice common factor: Notice that both groups contain the common factor 3t+2. We can factor out 3t+2 from the entire expression. The factored form is t+2(3t+2).
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