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Sagot :

MOI7683
a) x^2-5^2= x^2-25
b)3^2-x^2= 9-x^2
c)x^2-8^2= x^2-64
d)a^2-4^2= a^2-16
e)(3x)^2-1^2= 9x^2-1
f)4^2-(7x)^2= 16-49x^2
g)(2x)^2-5^2= 4x^2-25
h)5^2-(2x)^2= 25-4x^2

Voilà pour toi

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