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Pe care scot factor comun din operatia 97×98-98×95-2×97=

Răspuns :

97×98-98×95-2×97=

= 98 × (97 -95) - 2 × 97 =

= 98 × 2 - 2 × 97 =

= 2×(98 - 97) =

= 2 × 1 =

= 2
97×98-98×95-2×97=
98(97 - 95) - 2x97 = 
98 x 2 - 2 x 97 =
2x (98-97) =
2 x 1 =