| Summary |
When solving a
quadratic equation ax2+bx+c = 0 which will not
factorise, you should use the formula:
When the roots are complex, they are
in fact complex conjugates, ie., of the form a+bi and a-bi.
 A
note about graphic calculators
A graphic calculator, for example the TI-83 or similar model,
can work with complex numbers.
  First select MODE and move down to select
a+bi:
Then press 2nd QUIT and enter a complex number
calculation. |
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