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Determinați in ex. Semnat cu roșu!

Determinați In Ex Semnat Cu Roșu class=

Răspuns :

b1q-b1=-4                      b1(q-1)=-4                b1=-4/(q-1)
b1q²-b1=8                      b1(q²-1)=8             [tex] -\frac{4}{q-1}*(q-1)(q+1)=8
[/tex]

b1=-4(q-1)                       b1=-4/(q-1)           b1=1
q+1=-2                             q=-3                      q=-3