Question

Simplify: 3^3 * 3^-2

Answer 1

Answer:

${3}^{3} \times {3}^{ - 2}$

${a}^{m} \times {a}^{n} = {a}^{m + n}$

${3}^{3 + ( - 2)} = {3}^{3 - 2} = {3}^{1} = 3$

Answer 2

Step-by-step explanation:

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+...