Răspuns:
Explicație pas cu pas:
a₈=a₁+7r=40
a₂₀=a₁+19r=-20
12r=-60
r=-5⇒a₁=75
a₇=a₁+6r=75-30=45
a₅₂=-125
r=-5
a₅₂=a₁+51r=-125
a₁-255=-125
a₁=130
a₂=3=a₁+r⇒
a₅=5=a₁+4r
3r=2
r=
a₂₈=a₁+27r=
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Răspuns:
Explicație pas cu pas:
a₈=a₁+7r=40
a₂₀=a₁+19r=-20
12r=-60
r=-5⇒a₁=75
a₇=a₁+6r=75-30=45
a₅₂=-125
r=-5
a₅₂=a₁+51r=-125
a₁-255=-125
a₁=130
a₂=3=a₁+r⇒
a₅=5=a₁+4r
3r=2
r=
a₂₈=a₁+27r=