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`alpha`, `beta`, `gamma` are the roots of the equation `x^(3)-7x^(2)+bx+5=0`. If `Delta_(1)` is the area of the triangle formed by `(alpha, alpha^(3))`, `(beta, beta^(3))`, `(gamma, gamma^(3))`, `Delta_(2)` is the area of the triangle formed by `(alpha, alpha^(2))`, `(beta, beta^(2))`, `(gamma, gamma^(2))` then `(Delta_(1))/(Delta_(2))`=

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