7. If a,b,c rational and a + b + c=0, show roots of (b+c–a)x² + (c+a–b)x +(a+b+c) = 0 are rational.

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7. If a,b,c rational and a + b + c=0,
show that the roots of (b+c–a)x² + (c+a–b)x +(a+b+c) = 0 are rational.

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Sir you proved b^2=4ac by taking b^2= 4ac
The correct way is to bring eqn to -2(ax^2 +bx+c), and then divide by -2, then since a+b+c=0, 1 is a solution and another root is C/A since product of roots is C/A and give. That a, b, c are rational, c/a is also is rational, hence bothe the roots are rational

Rocky-Play

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abishdahal

Bro rational root Vanya xa

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ishanpokhrel

7. If a,b,c rational and a + b + c=0, show roots of (b+c–a)x² + (c+a–b)x +(a+b+c) = 0 are rational.

7. If a,b,c rational and a + b + c=0, show roots of (b+c–a)x² + (c+a–b)x +(a+b+c) = 0 are rational....

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