Úloha ID 758 - 
Který z následujících výrazů je možné doplnit na vynechané místo rovnice v zadání, aby platila uvedená rovnost?
Správná odpověď je: A
(5x2 + 12x) · 5x = − 36x + x · (5x + 6)2
(5x2 + 12x) · 5x + 36x = x · (25x2 + 60x + 36)
(25x2 + 60x) · x + 36x = x · (25x2 + 60x + 36)
(25x2 + 60x + 36) · x = (25x2 + 60x + 36) · x
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