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discriminant

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The quadratic formula 2013-01-03
From itsel:
Find the discriminant ans use it to determine the use the quadratic formula to solve the equasion -2x^2+3x+2=0
Answered by Penny Nom.
The discriminant 2010-01-17
From Sonjonnia:
What is the value of the discriminant?
16x^=16x-4

Answered by Penny Nom.
Values of k for which k(x^2+2x+3) - 4x - 2 is never negative 2007-06-29
From claire:
Find the range of values of k for which k(x^2+2x+3) - 4x - 2 is never negative.
Answered by Harley Weston.
The roots of (x - k)(1-3x) + 1 = 0 2007-06-28
From Claire:
Show that the roots of (x - k)(1-3x) + 1=0 are real and distinct for all real values of k. Hence, or otherwise, find the range of 9sin^2 r - 6sin r + 13
Answered by Harley Weston.
Discriminant 2005-06-20
From A student:
If a quadratic has real root, its discriminant b2-4ac>=0 Is there any similar condition or method by which you can find whether roots of a cubic equation are real or not?
Answered by Chris Fisher.
 
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