Solving quadratic inequalities

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Intros
Lessons

  1. Solve:
    i)
    x2+2x15=0x^2+2x-15=0
    ii)
    x2+2x150x^2+2x-15\leq0
    iii) x2+2x15x^2+2x-15 >> 00
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Examples
Lessons

  1. Solve:
    i)
    2x2+x+3=0-2x^2+x+3=0
    ii)
    2x2+x+30-2x^2+x+3 \ge 0
    iii) 2x2+x+3-2x^2+x+3 < 00

    1. Solve:
      i)
      x210x+25=0x^2-10x+25=0
      ii)
      x210x+25x^2-10x+25 > 00
      iii)
      x210x+25x^2-10x+25 < 00
      iv)
      x210x+250x^2-10x+25 \leq 0