(14+2b)^2 = 196 + 56b + 4b²
(2x^3-14)^2 = 4x^6 - 56x³ + 196
125+27a^3 = (5 + 3a)(25 - 15a + 9a²)
(x^7+3y)(x^7-3y) = x^14 - 9y²
(5-12y^7)^2 = 25 - 120y^7 + 144y^14
25y^4-64x^6 = (5y² + 8y³)(5y² - 8y³)
64x^9-b^3 = (4x³ - b)(16x^6 + 4x³b + b²)
(8y-4x)^2 = 64y² - 64xy + 16x²