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!

$$e=mc^2$$