Question

efectuati 8×10la puteria4 + 7 × 10 la puteria 3 + 4 ×10la puteria 2 + 1 × 10 la puteria 1 +9×10la puteria 0

Answer 1

8 × 10^4 + 7 × 10^3 + 4 × 10^2 + 1 × 10^1 + 9 ×

10^0 =

10^1 × (8 × 10^3 + 7×10^2 +4×10 + 1) + 9 × 1 =

10 × (8×1000 + 7 × 100 + 40 + 1) + 9 =

10 × (8000 + 700 + 41) + 9 =

10 × 8741 + 9 =

87410 + 9 =

87419
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