Question

7. Which one of the following expressions would you use the additive identity property to simplify? x + 3x 12(1)(a) 12(x + y) 2a²+ 0 + a

Answer 1

2a²+ 0 + a​

Step-by-step explanation:

The additive identity property says that when we add 0 an a number, the result is the same number, so:

x + 0 = x

Since the 4th option is the only one with a zero in the expression, we can apply the additive identity property and simplify as:

2a²+ 0 + a​

2a²+ a​

Therefore, the answer is 2a²+ 0 + a​