(1)  5 ⋅ 5 ⋅ n ⋅ n

(2)  2 ⋅ 3 ⋅ 3 ⋅ x ⋅ y

(3)  2 ⋅ 2 ⋅ 3 ⋅ y

(4)  3 ⋅ 7 ⋅ y ⋅ y

(5)  3 ⋅ 3 ⋅ 3 ⋅ 3 ⋅ a

(6)  2 ⋅ 2 ⋅ 23 ⋅ q

(7)  2 ⋅ 2 ⋅ 3 ⋅ 3 ⋅ x ⋅ x ⋅ x

(8)  2 ⋅ 2 ⋅ 2 ⋅ 3 ⋅ h

(9)  2 ⋅ 2 ⋅ 2 ⋅ 2 ⋅ 3 ⋅ x ⋅ x

(10)   x ⋅ x ⋅ y ⋅ y ⋅ y

(1)  (x + t)(x + a)

(2)  (y + 2)(2y² + 1)

(3)  (x - 5)(y - 2)

(4)  (2a - 3b)(3x - d)

(5)  3(x² - 2)(x + 1)

(6)  (2a - c)(x² + 3)

(7)  (4a + 5b)(a - 2)

(8)  (x + 3y)(a + 3)(a - 3)

(1)  (x+3y)(x+3y)

(2)  (2a-5b)(2a-5b)

(3)  2(x+3y)(x+3y)

(4)  2a(b-4)²

(5)  (x+5y)(x-5y)

(6)  (3m+4n)(3m-4n)

(7)  (x²+y²)(x+y)(x-y)

(8)  2(4p²+9q²)(2p+3q)(2p-3q)

(1)  4(x + 2)

(2)  4(4a + 16b - c)

(3)  4(9x - 4)

(4)  7(5 + 3a)

(5)  (a - 2b) (4 + 5x)

(1)  (x + 1)(x + 5)

(2)  (x - 5)(x + 7)

(3)  (x - 7)(x + 1)

(4)  (x - 5)(x - 13)

(5)  (3x + 4)(x - 3)

(6)  (x + 2)(2x - 3)