1. Calculați
9 + 8[ 7 + 6 × ( 5 + 4 × 3 ) - 2 × 1 ] - 10 × 10 =
9 + 8[ 7 + 6 × ( 5 + 12 ) - 2 × 1 ] - 10 × 10 =
9 + 8( 7 + 6 × 17 - 2 × 1 ) - 10 × 10 =
9 + 8( 7 + 102 - 2 ) - 10 × 10 =
9 + 8( 109 - 2 ) - 10 × 10 =
9 + 8 × 107 - 10 × 10 =
9 + 856 - 100 =
865 - 100 =
765