Fisika Sekolah Menengah Pertama nilai × yg memenuhi persamaan [tex]( \frac{x {}^{1} + 1}{1 - {x}^{ 2} }) = 2[/tex]adalah​

annabelroweulv – April 11, 2023

nilai × yg memenuhi persamaan
[tex]( \frac{x {}^{1} + 1}{1 - {x}^{ 2} }) = 2[/tex]
adalah​

ingat a² - b² = (a - b)(a + b)

1 - x² = 1² - x² = (1 - x)(1 + x)

[tex] \frac{x + 1}{1 - {x}^{2} } = 2 \\ \frac{x + 1}{(1 - x)(1 + x)} = 2 \\ \frac{1}{1 - x} = 2 \\ 1 = 2( 1 - x) \\ 1 = 2 - 2x \\ 2x = 1 \\ x = \frac{1}{2} [/tex]

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