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montie
montie
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Q:

Solve x^2 = 75 where "x" is a real number.  Simplify answer as much as possible.

 

Solve (z-1)^2 - 36 = 0, where "z" is a real number.  Simplify as much as possible.

 

Solve for "x" by using quadratic form.

7x^2 + 2x - 2 = 0

Complete the value of the discriminant and give the number of real solutions to the quadratic equation:

-7x^2 - 9x - 4 = 0          Discriminant ____                      # of real solutions ______

 

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  • Posted on Dec 03, 2009 at 6:14:33PM
Posted by :
john1122
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A:
Preview: ...   (z - 1) 2 - 36 = 0 z 2 -2z + 1 - 36 = 0 z 2 - 2z - 35 = 0 (z - 7)(z + 5) = 0 z = 7  and  ...
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