Identify Polynomial Structure: Identify the structure of the polynomial. The given polynomial is a trinomial in the form of ax2+bx+c, where x is replaced by c4 and a=6, b=−31, and c=39.
Find Common Factor: Look for a common factor in all three terms.There is no common factor in all three terms, so we proceed to factor by grouping or other methods.
Factor as Quadratic Equation: Since the polynomial is a quadratic in form with respect to c4, we can try to factor it as if it were a quadratic equation. We look for two numbers that multiply to ac (6×39) and add to b (−31).We need to find two numbers that multiply to 234 (6×39) and add up to −31.
Find Two Numbers: Find the two numbers that satisfy the conditions from Step 3.The numbers −26 and −5 satisfy these conditions because −26×−5=130 and −26+−5=−31.
Rewrite Middle Term: Rewrite the middle term of the polynomial using the two numbers found in Step 4.6c8−26c4y5−5c4y5+39y10
Factor by Grouping: Factor by grouping. Group the first two terms together and the last two terms together.(6c8−26c4y5)−(5c4y5−39y10)
Factor Out Common Factor: Factor out the greatest common factor from each group.2c4(3c4−13y5)−y5(5c4−39y5)
Identify Common Factor: Notice that (3c4−13y5) is a common factor in both groups.2c4(3c4−13y5)−y5(3c4−13y5)
Factor Out Common Factor: Factor out the common factor (3c4−13y5).(3c4−13y5)(2c4−y5)
Write Final Factorized Form: Write down the final factorized form of the polynomial.The polynomial 6c8−31c4y5+39y10 is completely factored as (3c4−13y5)(2c4−y5).
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