Choose two trinomials from the list below to factor. Using complete sentences, explain how to factor each one. Be sure that the final factorization (or "answer") is a part of your explanation.

2x2 + 13x + 15
2x2 + 27x + 13
5x2 − 2x − 7
10x2 − 7x − 3
8x2 − 11x + 3

Question

Choose two trinomials from the list below to factor. Using complete sentences, explain how to factor each one. Be sure that the final factorization (or "answer") is a part of your explanation.

2x2 + 13x + 15
2x2 + 27x + 13
5x2 − 2x − 7
10x2 − 7x − 3
8x2 − 11x + 3

dumbcow · Answer

Find factors of (a*c) that add up to b
Example: 2x^2 +13x +15
a*c = 2*15 =30
10*3 = 30
10+3 = 13
-> 2x^2 +10x +3x +15
Factor by grouping
2x(x+5) +3(x+5)
(2x+3)(x+5)