[a⁴/4 + 64/a⁶]

[a²/4 + 4/a²][a⁴/16 - 1 + 16/a⁴]

1

[4/a2]³

(x - 7)(x - 8)

(x + 7)(x - 8)

(x + 7)(x + 8)

(x - 8)

(3a + b)(a - b)

(a - b)(3a + b + 3)

(b + 3)(a - b)

(a + b)³

7p

(49p² - q²)

(q² - 49p²)

(7p - 9q)(7p + 9q)

x(b + y)(a - c)

b(x + y)(a - c)

a(x + y)(a - c)

y(x + y)(b - c)

(5a - 3b)(5a + 3b)

(5a + 3b)3a

0

(3a + 3b)

(x - 2)(bx² - 1)

(x - 1) bx²

(bx² - x) x²

(1 - bx²)2

(10a - 15b)(10a + 15b)

(15a - 10b)

0

(10a + 10b) 15b

(x - 6)(ax² - 1)

(1 - ax²)x

(x - ax²)

(x - 6)

(x - 5)²

(x - 5)(x + 5)

(x + 5)(x + 5)

(x + 5)2