jika x^1-x^-1=8 maka x^2 - x^-2=
Matematika
Muhammadfzi123
Pertanyaan
jika x^1-x^-1=8 maka x^2 - x^-2=
1 Jawaban
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1. Jawaban Anonyme
jawab
x¹ - x⁻¹ = 8
(x¹ - x⁻¹)² = x² + x⁻² - 2 x.x⁻¹
(8)² = (x² + x⁻²) - 2(1)
x² + x⁻² = 64 - 2
x² + x⁻² = 64