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  • If x = 2/3and x = - 3are roots of a x square + 7 x + b =0 find a and b​

If x = 2/3and x = - 3are roots of a x square + 7 x + b =0 find a and b​

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$ x = 2/3 and x = - 3 are roots so (x-2/3)(x+3 ) are factors of the equation $ \\ (x -2/3)(x+3) =0\\ x^2 + 3x - \frac{2}{3}x - 2 =0\\ 3x^2 + 7x - 6 =0 \\ \text{Compare with }ax^2 + 7x +b =0 \\ a =3 , b =-6

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Ravindra Pindel

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