Réponse :
x²+2x+3 = x²+2x+1 + 2 = {x+1)² + 2
Explications étape par étape :
x²-6x+1 = x²-6x+9 - 8 = {x-3)² - 8
2x²-4x+3 = 2{x²-2x) +3 = 2{x²-2x+1) -2 +3 = 2{x-1)² + 1
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Réponse :
x²+2x+3 = x²+2x+1 + 2 = {x+1)² + 2
Explications étape par étape :
x²+2x+3 = x²+2x+1 + 2 = {x+1)² + 2
x²-6x+1 = x²-6x+9 - 8 = {x-3)² - 8
2x²-4x+3 = 2{x²-2x) +3 = 2{x²-2x+1) -2 +3 = 2{x-1)² + 1