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Sagot :

Bonjour,

a. 4N= 4N

b. N(N + 5)= N²+5N

d. Nx5 = 5N

e. N + 5 + N +5 = 2N +10

g. 2 (N + 5) + 2N = 2N+10 + 2N = 4N+10

c. N +5 = N+5

f. N2 + 5N = N² +5N

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