Question

calculeaza in doua moduri. 4×11+4×210+4×512+4×176=. 7×140+7×275+7×308+7×56=. 3×800-3×700=. 8×60-8×0=

Answer 1

asta e raspunsul succes

Answer 2

4 × 11 + 4 × 210 + 4 × 512 + 4 × 176 = 3 636

= 44 + 840 + 2 048 + 704  =

=  3 636  → primul mod

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→ dau factor comun pe 4

= 4 × ( 11 + 210 + 512 + 176 ) = 4 × 909 = 3 636 → al doilea mod

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7 × 140 + 7 × 275 + 7 × 308 + 7 × 56 = 5 453

= 980 + 1 925 + 2 156 + 392 =

= 5 453 → primul mod

→ dau factor comun pe 7

= 7 × ( 140 + 275 + 308 + 56 ) =

= 7 × 779 =

= 5 453 → al doilea mod

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3 × 800 - 3 × 700 = 2 400 - 2 100 = 300 → primul mod

= 3 × ( 800 - 700 ) = 3 × 100 = 300 → al doilea mod

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8 × 60 - 8 × 0 = 480 - 0 = 480 → primul mod

= 8 × ( 60 - 0 ) = 8 × 60 = 480 → al doilea mod