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Anika12346
@Anika12346
October 2021
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ПОМОГИТЕ,ПОЖАЛУЙСТА С НОМЕРОМ 50 А
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Verified answer
A(n) = -8
a(n+1) = первое число
a(n+2) = второе число
a(n+3) = -35
a1 + (n-1)*d = -8 ---> a1 = (1-n)*d - 8
a1 + (n+3-1)*d = -35
-----------------------------система)))
d - dn - 8 + dn + 2d = -35
3d = -35+8 = -27
d = -9
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Answers & Comments
Verified answer
A(n) = -8a(n+1) = первое число
a(n+2) = второе число
a(n+3) = -35
a1 + (n-1)*d = -8 ---> a1 = (1-n)*d - 8
a1 + (n+3-1)*d = -35
-----------------------------система)))
d - dn - 8 + dn + 2d = -35
3d = -35+8 = -27
d = -9