calculeaza produsele in doua moduri: a) 563x(807+182)= 421x(971-133)= (321+724)x9= b) (1276+33456)x7= 4x(243421-23890)= (213+114)x134=
Răspunsuri la întrebare
asta e raspunsul succes
a) 563 × ( 807 + 182 ) = 563 × 989 = 556 807 → primul mod
= 563 × 807 + 563 × 182 = 454 341 + 102 466 = 556 807 → al doilea mod ( aplic distributiviatea inmultirii fata de adunare )
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421 × ( 971 - 133 ) = 421 × 833 = 352 798 → primul mod
= 421 × 971 - 421 × 133 = 408 791 - 55 993 = 352 798 → al II-lea mod
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b)
( 1 276 + 33 456 ) × 7 = 34 732 × 7 = 243 124 → primul mod
= 1 276 × 7 + 33 456 × 7 = 8 932 + 234 192 = 243 124 → al doilea mod
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4 × ( 243 421 - 23 890 ) = 4 × 219 531 = 878 124 → primul mod
= 4 × 243 421 - 4 × 23 890 = 973 684 - 95 560 = 878 124 → al doilea mod
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( 213 + 114 ) × 134 = 327 × 134 = 43 818 → primul mod
= 213 × 134 + 114 × 134 = 28 542 + 15 276 = 43 818 → al doilea mod