Use the short computational formula ( a - b ) 3

Exercise the following short computational formula

( 6 + 7 ) 3 = - + -

Fill in the blank boxes using the following short computational formulas so that it corresponds a box to each term .

The purpose of this exercise is to learn about short computational formulas and the results are not important.

Exemple !

( a + b ) 3 = a 3 + 2a2 b + 2ab 2 + b 3

( a - b ) 3 = a 3 - 2a2 b + 2ab 2 - b 3

a 3 + b 3 = ( a + b )( a 2 - ab + b 2 )

a 3 - b 3 = ( a - b )( a 2 + ab + b 2 )

By learning math, you learn to think.