Respuesta :

wikk
9 × (5 × 2) = (9 × 5) × 2

You can see that all the numbers are there and in the same order. The only thing that changed is the parentheses location.

This is called the Associative Property (of Multiplication, because you're multiplying).
9x (5 x 2) = (9 x 5) x2 has following properites

Composite
Deficient
Odd
Evil
Square and
Nonagonal