Réponse:
A = x^2 + 14 x + 49
B =9t^2 + 30t +25
C = 25 n^2 + 60n +36
D = 9s^2-600s +10000
2.
(x+7)^2 = x^2 +2x7 + 49
= x^2 + 14x + 49
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Réponse:
A = x^2 + 14 x + 49
B =9t^2 + 30t +25
C = 25 n^2 + 60n +36
D = 9s^2-600s +10000
2.
(x+7)^2 = x^2 +2x7 + 49
= x^2 + 14x + 49