Final answer:
The mathematical equivalent of 128 x 129 is 16,512.
Step-by-step explanation:
The mathematical equivalent of 128 x 129 is option d-129 x 128.
To find the product of two numbers, we multiply the two numbers together. So, 128 x 129 can be calculated as:
- 128 x 100 = 12,800
- 128 x 20 = 2,560
- 128 x 9 = 1,152
Now, we add these three values together:
- 12,800 + 2,560 = 15,360
- 15,360 + 1,152 = 16,512
Therefore, 128 x 129 is equal to 16,512.