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Simplifying f(7) = x4 + 5x3 + 9x2 + -7x + -5 Reorder the terms for easier multiplication: 7f = x4 + 5x3 + 9x2 + -7x + -5 Reorder the terms: 7f = -5 + -7x + 9x2 + 5x3 + x4 Solving 7f = -5 + -7x + 9x2 + 5x3 + x4 Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Divide each side by '7'. f = -0.7142857143 + -1x + 1.285714286x2 + 0.7142857143x3 + 0.1428571429x4 Simplifying f = -0.7142857143 + -1x + 1.285714286x2 + 0.7142857143x3 + 0.1428571429x4
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