Question

Simplify: 3^3 * 3^-2

Answer 1

Is there a formula to add a sequence of cubes? It seems that the sum is always square, but what is even more remarkable is that the sum of the first n cubes, 13+23+... + n 3 = ( n ( n +1)/2)2, which is the square of the n th triangle number. For example, 13+23+..

Answer 2

Answer:

77 is answer please make me brainslit