Find the product. (a2 + 2a + 1)(a + 1) a. a2 + 3a + 2 b. a3 + 3a2 + 3a + 1 c. a3 + 2a 2 + a + 1 d. a3 + 3a2 + a + 1

 (a + 1)(a² + 2a + 1)

= a(a² + 2a + 1) + 1(a² + 2a + 1)

= a³ + 2a² + a   + a² + 2a + 1

= a³ + 3a² + 3a + 1

b

a function could be identified in 3 ways either on a chart,graph, or ordered pairs. first a function is that each point has its own. the rule is that there can be many x's to one y but there can not be 2 x's at different y's. so on a graph when you put a straight line through the y's there should be one dot only to be a function.

step-by-step explanation: