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Simplifying -1kx = x2 + -1f(x + 5) + 30 Reorder the terms: -1kx = x2 + -1f(5 + x) + 30 -1kx = x2 + (5 * -1f + x * -1f) + 30 -1kx = x2 + (-5f + -1fx) + 30 Reorder the terms: -1kx = 30 + -5f + -1fx + x2 Solving -1kx = 30 + -5f + -1fx + x2 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Divide each side by '-1x'. k = -30x-1 + 5fx-1 + f + -1x Simplifying k = -30x-1 + 5fx-1 + f + -1x Reorder the terms: k = f + 5fx-1 + -30x-1 + -1x
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