Factoring trinomials
Find the GCF: 24, 48
8
x2-16
(x+4)(x-4)
9y2-36
(3y+6)(3y-6)
Why is the following answer to y2+25 incorrect?
(y-5)(y+5)
This is Prime. Difference of Squares only applies to situations where we can subtract, not add.
2x2-98
2(x-7)(x+7)
100x2-81y4
(10x-9y2)(10x+9y2)