4 cubed = 4 times 4 times 4 =64
12 + 64 = 76
The sum of the first n cubed numbers is: [n*(n+1)/2]2 which is the same as the square of the sum of the first n numbers.
- 12 + 4 = - 8
sum means to add so..... 8 + 4 = 12
4
It is: 3*(4+12) = 48
the answer of 2 cubed is 4 because 2x2=4
The sum of 4 and 8 means: 4 + 8 = 12 so the answer is 12.
12 + 4 = 16
4 + 12
The sum of the first n cubed numbers is: [n*(n+1)/2]2 which is the same as the square of the sum of the first n numbers.
- 12 + 4 = - 8
sum means to add so..... 8 + 4 = 12
12 cubed = 12 x 12 x 12 = 1728
16.
8+4=12
4 + 12 = 16
8 and 4