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Sagot :

exercice 1: le carré de ( 2x)² = 4 x² car 2 X2 = 4 et x X x = x²

c) (5x)² = 25 x² d= (6x)² = 36 x² e) = (9x)² = 81 x² f= (7x)² = 49 x² g= (10t)² = 100 t²

h= (4a)² = 16 a² i= (x²)² = x puissance 4 j= (-5x)² = 25 x² car - multiplié par - = +

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