Factoring Trinomials when The Leading Coefficient Is Not One 1st: Set up the answer. 2nd: List all factor pairs of the last term. 3rd: List all factor pairs of the first term. 4th: List all factor pairs of the product of the first and the last terms. 5th: Add or subtract to get the middle term. If + , add and make both the same sign. If - , subtract and make the signs different. 6th: The "larger" number always takes this (linear term) sign. 7th: Match a pair of factors of the first with a pair of factors of the last to make the required factors of the product . 8th: Place factor by matching OUTERS with OUTERS and INNERS with INNERS. 9th: Verify by multiplying to obtain the product. from www.mathnstuff.com/math/algebra/afactor.htm Factoring Trinomials when The Leading Coefficient Is Not One 1st: Set up the answer. 2nd: List all factor pairs of the last term. 3rd: List all factor pairs of the first term. 4th: List all factor pairs of the product of the first and the last terms. 5th: Add or subtract to get the middle term. If + , add and make both the same sign. If - , subtract and make the signs different. 6th: The "larger" number always takes this (linear term) sign. 7th: Match a pair of factors of the first with a pair of factors of the last to make the required factors of the product . 8th: Place factor by matching OUTERS with OUTERS and INNERS with INNERS. 9th: Verify by multiplying to obtain the product. from www.mathnstuff.com/math/algebra/afactor.htm Factoring Trinomials when The Leading Coefficient Is Not One 1st: Set up the answer. 2nd: List all factor pairs of the last term. 3rd: List all factor pairs of the first term. 4th: List all factor pairs of the product of the first and the last terms. 5th: Add or subtract to get the middle term. If + , add and make both the same sign. If - , subtract and make the signs different. 6th: The "larger" number always takes this (linear term) sign. 7th: Match a pair of factors of the first with a pair of factors of the last to make the required factors of the product . 8th: Place factor by matching OUTERS with OUTERS and INNERS with INNERS. 9th: Verify by multiplying to obtain the product. from www.mathnstuff.com/math/algebra/afactor.htm