Identify a, b, c: Identify a, b, and c in the quadratic expression 3t2−11t+6. Compare 3t2−11t+6 with at2+bt+c. a=3b0b1
Find two numbers: Find two numbers whose product is a∗c (3∗6=18) and whose sum is b (−11).We need to find two numbers that multiply to 18 and add up to −11.−9∗−2=18−9+−2=−11Two numbers: −9, −2
Rewrite middle term: Rewrite the middle term −11t using the two numbers found in Step 2.3t2−9t−2t+6Group the terms to factor by grouping.(3t2−9t)+(−2t+6)
Factor by grouping: Factor out the common factors from each group.3t(t−3)−2(t−3)Now we have a common binomial factor (t−3).
Factor common factors: Factor out the common binomial factor.(3t−2)(t−3)This is the factored form of the quadratic expression.