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( 1/3)² - ( 1/3)³ = 1/9 - 1/27 = 3/27 - 1/27 = 2/27
1 - 2 ⁶ = 1 - 64 = - 63
( 1 - 2)⁶ = - 1 ⁶ = - 1
2 x 10 ⁹ = 2 000 000 000
( 2 x 10 ) ² = 20² = 400
10- 162 = - 152
6 - 3 x 2 ⁵ = 6 - 3 x 32 = 6 - 96 = - 90
( 6 - 3 x 2) ⁵ = ( 6 - 6 )⁵ = 0
( 6 - 3 ) x 2 ⁵ = 3 x 2⁵ = 96
