Difference between revisions of "2007 iTest Problems/Problem 18"
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Suppose that <math>x^3+px^2+qx+r</math> is a cubic with a double root at <math>a</math> and another root at b, where <math>a</math> and <math>b</math> are real numbers. | Suppose that <math>x^3+px^2+qx+r</math> is a cubic with a double root at <math>a</math> and another root at b, where <math>a</math> and <math>b</math> are real numbers. | ||
If <math>p=-6</math> and <math>q=9</math>, what is <math>r</math>? | If <math>p=-6</math> and <math>q=9</math>, what is <math>r</math>? | ||
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== Solution == | == Solution == | ||
Revision as of 17:16, 1 January 2017
Problem
Suppose that 
is a cubic with a double root at 
and another root at b, where and 
are real numbers.
If 
and 
, what is 
?
