x + 1/x = 5 x^3 + 1/x^3 = ?
Matematika
Shagaru
Pertanyaan
x + 1/x = 5
x^3 + 1/x^3 = ?
x^3 + 1/x^3 = ?
1 Jawaban
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1. Jawaban drLhy71
(x+1/x)^3= x^3+3x+3/x+1/x^3
125= x^3+1/x^3+3(x+1/x)
125-3(x+1/x)= x^3+1/x^3
125-3•5=110