Materi : Bentuk dan Persamaan kuadrat
( x - 1 )/x = 3x/4
Semua dikalikan 4x
4( x - 1 ) = 3x²
4x - 4 = 3x²
3x² - 4x + 4 = 0
{ a = 3 , b = -4 , c = 4 }
\________________/
x = ( -b ± √[ b² - 4ac ] )/2a
x = ( 4 ± √[ (-4)² - 4(3)(4) ] )/2(3)
x = ( 4 ± √[ 16 - 48 ] )/6
x = ( 4 ± √[ -32 ] )/6
x = ( 4 ± i√32 )/6
x = ( 4 ± 4i√2 )/6
Himpunan Penyelesaian
x = ⅓( 2 + 2i√2 )
x = ⅓( 2 - 2i√2 )
Semoga bisa membantu
[tex] \boxed{ \colorbox{navy}{ \sf{ \color{lightblue}{ Answer\:by\: BLUEBRAXGEOMETRY}}}} [/tex]
Penjelasan dengan langkah-langkah:
Persamaan Kuadrat
[tex] \frac{x - 1}{x} = \frac{3x}{4} \\ 4(x - 1) = x(3x) \\ 3 {x}^{2} = 4x - 4\\ 3 {x}^{2} - 4x + 4= 0[/tex]
Didapat;
a = 3 , b = -4 dan c = 4
semoga membantu
[answer.2.content]