x² – 16 = (x – 4)(x + 4)
y³ – 1/8 = (y – 1/2)(y² + 1/2 y + 1/4)
5y – 10xy = 5y(1 – 2x)
49a² + 9b² + 42ab = (7a + 3b)²
x² – 16 = (x – 4)(x + 4)
y³ – 1/8 = (y – 1/2)(y² + 1/2 y + 1/4)
5y – 10xy = 5y(1 – 2x)
49a² + 9b² + 42ab = (7a + 3b)²