$$9-b^2$$  

$$16a^2-4x^4$$  

$$400-100w^{20}$$  

$$g^{12}-h^{15}$$  

$$81g^6$$  

$$3h^3$$  

$$8k^{12}$$  

$$g^{30}$$  

$$x-y$$  

$$x+y$$  

$$x^2+xy+y^2$$  

$$x^2+xy-y^2$$  

10 and 3

- 3 and -10

5 and 6

-5 and -6

(x + 12)(x - 3)

(x + 9)(x - 4)

(x - 12)(x + 3)

(x - 9)(x - 4)

(k+4)(k-6)

(k+4)(k+6)

(k+6)(k-1)

(k-4)(k+6)

(x + 10)(x - 7)

(x - 10)(x + 3)

(x + 10)(x + 3)

(x + 10)(x - 3)

(7a-10)(a-8)

Not factorable

(3a+1)(a+1)

(3a-1)(a-1)

2(m + 3)(m - 3)

(2m - 3)²

(m + 3)(2m - 3)

(2m + 3)(m - 3)