3х2 – х – 4 = 0

3х2 – х – 4 = 0

  • 3х +10- 4=0
    3=4
    т.к 4-3=1
  • 3x*2-x-4=0
    2x*2-4=0
    4x-4=0
    4x=4
    x=1