elizabethatkins1922
10.06.2020 •
Mathematics
The price c of a used car plus 11% sales tax
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Ответ:
aₙ = 2*n*n - n -1
Step-by-step explanation:
a₁ = 0
a₂ = 5 = 2*2*2 -2-1 = 8-3 = 5
a₃ = 2*3*3 -3-1 = 18-4 =14
a₄ = 2*4*4 - 4-1 = 32-5 =27
aₙ = 2*n*n - n -1