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grupati factori pentru a xalcula mai rapid 4x93x25= 2x50x26x2= 20x2+38x3 = 260x7x2x5

Răspuns :

4×25×93=100×93=9300
2×50×26×2=100×52=5200
20×3×38×2=60×84=5040
260×7×2×5=1830×10=18300