Prove that if one solution of a quadratic equation of the form x^2+bx+c=0 is rational(where b and c are rational) then the other solution is also rational. Use the fact that if the solutions of the equation are r and s, then

x^2+bx+c = (x-r)(x-s)

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- February 21st 2010, 07:44 PMjeffjohnsonhelp with proof.
Prove that if one solution of a quadratic equation of the form x^2+bx+c=0 is rational(where b and c are rational) then the other solution is also rational. Use the fact that if the solutions of the equation are r and s, then

x^2+bx+c = (x-r)(x-s) - February 21st 2010, 07:46 PMDrexel28