Solving quadratic inequalities

Solving quadratic inequalities

Lessons

  • Introduction

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

  • 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

  • 2.

    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