All questions will be solved using excel and excel workbook should be provided. 1. Determine the real root of f(x) = -25 +82x - 90x² + 44x³ - 8x² +0.7x5: (a) Graphically. (b) Using bisection to determine the root. Employ initial guesses of x₁ = 0.5 and xu = 1.0. to &a= 10%

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