Réponse:
1)
f(x)= (x+2)²-x²
2)
a
f(2)= (2+2)²-2²
= 16- 4
= 12
b
f(-1)= (-1+2) - (-1)²
= 1-1
= 0
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Réponse:
1)
f(x)= (x+2)²-x²
2)
a
f(2)= (2+2)²-2²
= 16- 4
= 12
b
f(-1)= (-1+2) - (-1)²
= 1-1
= 0