Jawapan

  • Pengguna Brainly
2016-01-09T23:43:17+08:00
2x ( x + 1 ) = x
2x^2 + 2x - x = 0
2x^2 + x = 0
( x - 0 ) ( 2x +1 ) = 0
x = 0 , x = - 1 / 2
1 5 1