How do I find the roots of a quadratic?

e.g. given x^2 +3x -8 = 0using the quadratic formulayou find x = (-b +- sqrt(b^2 -4ac))/2ayou then find one root using the plus instead of plus minus sign, and the other root using the minus instead of plus minus sign.

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Answered by Alex Z. Maths tutor

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