Learn how to tell what type of factoring technique to use in this video in these 30 examples. We discuss a decision tree and a process for determining what factoring technique to use. We discuss:
greatest common factor
difference of two squares
sum and difference of cubes
trinomials with leading coefficient 1
trinomials with leading coefficient not equal to 1
factoring by grouping
perfect square trinomials
ac method of factoring trinomial (split middle term and factor by grouping)
trinomials in "quadratic form"
factoring involving fractions
leading coefficient negative
factoring completely when more than one technique is required in a given problem.
Jump to specific problem:
1:10 factor greatest common factor 12x³+10x
2:03 factor trinomial y²-2y-8
3:31 factor 9c²-64 using difference of two squares
4:46 factor 125x³+1 using the sum of two cubes formula
6:37 factor 3y²+y-10 trinomial with a≠1 using ac method or splitting middle term
8:43 factor 4x³-4x²+5x+5 using factoring by grouping
9:51 factor 9y²-42y+49 using perfect square trinomial formula
11:16 factor 64x³-27 using difference of two cubes formula
12:35 factor -3y²-13y+10 by factoring out a negative then use the ac method
14:17 factor 2x³+5x²-18x-45 using factoring by grouping and difference of 2 squares
15:18 factor 1-144y² using difference of two squares
16:23 factor (1/9)x²-(2/9)x-(5/3) by eliminating fractions and then factoring the trinomial
18:13 factor x⁴-x²-42 trinomial in "quadratic form"
19:27 factor (81/16)y²-(1/4) by factoring out the fractions and using difference of squares
20:43 factor -5x³+x²+80x-16 by grouping
22:06 factor (x+3y)³+8 using sum of 2 cubes formula
23:13 factor 16y²+24y+9 using perfect square trinomial formula
24:07 factor 6x²-11x-10 using ac method to factor trinomial with a≠1
25:15 factor (1/2)y³-(121/8)y using greatest common factor and difference of two squares
26:05 factor 4(x+2)²(x-1)³-12(x+2)³(x-1)² using greatest common factor
27:27 factor x³+216 using sum of 2 cubes formula
28:08 factor y²+7y+12
29:30 factor 3x³-x²-12x+4 by grouping
30:13 factor 25y²-70+49 using perfect square trinomial formula
30:48 factor 7x²-25x+12 using ac method
31:39 factor x⁶+7x³-8 trinomial in "quadratic form" then factor sum and difference of cubes
33:00 factor 81y²-100 using difference of two squares
33:36 factor 6x²-x-15 using ac method and factor by grouping
34:46 factor 36y²+132y+121 perfect square trinomial
35:29 factor x²-19x+48
Learn more about factoring:
➡️My most popular factoring video here:
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➡️Get free 100 factoring problem worksheet with video solutions here:
https://youtu.be/HAO4Yuk9wP0
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