This site uses flash for videos. If you're having trouble enabling it, click on the information icon in the address bar to change your settings to allow Flash.

Solving Quadratic Equations (Quadratic Formula, Radicals and Complex / Imaginary Roots)

  1. 1
    Solve by factoring. $$3x^2+4x-15=0$$
  2. 2
    Solve by factoring. $$6x^2=3-7x$$
  3. 3
    Solve. Show exact and approximate answers to two decimal places.
    $$4x^2-12x+7=0$$

    When you can't factor easily use the quadratic formula: $$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$$
  4. 4
    Solve. ( answer in the form a+bi ) ($x \in C$). $$x^2+2x+2=0$$
  5. 5
    Solve. Show exact and approximate answers to two decimal places. $$3x^2-2=-6x$$
  6. 6
    Solve. ( answer in the form a+bi ) ($x \in C$). $$x^2-4x+12=0$$

    Good test question !
  7. 7
    Solve. Show exact and approximate answers to two decimal places. $$2x^2-6x=1$$
  8. 8
    Solve. ( answer in the form a+bi ) ($x \in C$). $$2x^2-3x+9=0$$
  9. 9
    Solve. Show exact and approximate answers to two decimal places. $$x^2+\frac{3}{2}x-\frac{1}{4}=0$$
  10. 10
    Solve. Show exact and approximate answers to two decimal places. $$x^2+\frac{2}{3}x-\frac{1}{6}=0$$
  11. 11
    Solve. ( answer in the form a+bi ) ($x \in C$). $$x^2+2ix+3=0$$

    Good test question !
  12. 12
    Solve. ( answer in the form a+bi ) ($x \in C$). $$ix^2+x-3i=0$$ Tough question!

$$e=mc^2$$