¿12x12?

12x12144? 12x1212?10?212 = 10 2?a?(b c) = a?b a?c

12x12 = (10 2) x 12

= 10x12 2x12

= 10x(10 2) 2x12

= 10x10 10x2 2x12

= 100 20 24

= 144

12?12?144?12x12144?