Б) (х + 1) (х + 2) -х ^ 2 = 5х + 4

Б) (х + 1) (х + 2) -х ^ 2 = 5х + 4

  • X ^ 2 + x + 2x + 2x ^ 2 = 5x + 4
    -2x = 2
    x = -1
    B) x ^ 2-x-x ^ 2 + 3x = 12
    6x = 12
    x = 2
  • Б) х ^ 2 + 2x + x + 2x ^ 2 = 5x + 4
    3x + 2 = 5x + 4
    -5x + 3x = 4-2
    -2x = 2
    x = -1