Step-by-step explanation:
The following match
* a² + 2ab + b² and (a + b)²
* a² - b² and (a - b)(a + b)
* a² - 2ab + b² and (a - b)²
* a³ - b³ and (a - b)(a² + ab + b²)
* a³ + b³ and (a + b)(a² - ab + b²)
* y = 10x Direct variation
* xy = 18 Algorithm
* y = 4xz Joint variation
* y = 4x/z Inverse variation
