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1 point by mk 6139 days ago | link | parent

I think this is right.

  arc> (def quadratic (a b c)
             (= minus-b (- 0 b))
             (= radical (sqrt (- (* b b) (* 4 a c))))
             (= divisor (* 2 a))
             (= root1 (/ (+ minus-b radical) divisor))
             (= root2 (/ (- minus-b radical) divisor))
             (cons root1 root2))