Example 4 - numbers that is they have no solution in the...

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Example 8 Solve for  x x 2  + 2  x  + 1 = 0.  Substituting in the quadratic formula,  Since the discriminant  b 2  – 4  ac  is 0, the equation has one root.  The quadratic formula can also be used to solve quadratic equations whose roots are imaginary 
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Unformatted text preview: numbers, that is, they have no solution in the real number system....
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