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Use the secant method to estimate the root of f(x) = -56x + (612/11)*10-4 x2 -...

Use the secant method to estimate the root of
f(x) = -56x + (612/11)*10-4 x2 - (86/45)*10-7x3 + (3113861/55)
Start x-1= 500 and x0=900.
Perform iterations until the approximate relative error falls below 1% (Do not use any interfaces such as excel etc.)

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