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Simplifying z(5 + -1z) + -8(3 + -4z) = 16 (5 * z + -1z * z) + -8(3 + -4z) = 16 (5z + -1z2) + -8(3 + -4z) = 16 5z + -1z2 + (3 * -8 + -4z * -8) = 16 5z + -1z2 + (-24 + 32z) = 16 Reorder the terms: -24 + 5z + 32z + -1z2 = 16 Combine like terms: 5z + 32z = 37z -24 + 37z + -1z2 = 16 Solving -24 + 37z + -1z2 = 16 Solving for variable 'z'. Reorder the terms: -24 + -16 + 37z + -1z2 = 16 + -16 Combine like terms: -24 + -16 = -40 -40 + 37z + -1z2 = 16 + -16 Combine like terms: 16 + -16 = 0 -40 + 37z + -1z2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. 40 + -37z + z2 = 0 Move the constant term to the right: Add '-40' to each side of the equation. 40 + -37z + -40 + z2 = 0 + -40 Reorder the terms: 40 + -40 + -37z + z2 = 0 + -40 Combine like terms: 40 + -40 = 0 0 + -37z + z2 = 0 + -40 -37z + z2 = 0 + -40 Combine like terms: 0 + -40 = -40 -37z + z2 = -40 The z term is -37z. Take half its coefficient (-18.5). Square it (342.25) and add it to both sides. Add '342.25' to each side of the equation. -37z + 342.25 + z2 = -40 + 342.25 Reorder the terms: 342.25 + -37z + z2 = -40 + 342.25 Combine like terms: -40 + 342.25 = 302.25 342.25 + -37z + z2 = 302.25 Factor a perfect square on the left side: (z + -18.5)(z + -18.5) = 302.25 Calculate the square root of the right side: 17.385338651 Break this problem into two subproblems by setting (z + -18.5) equal to 17.385338651 and -17.385338651.Subproblem 1
z + -18.5 = 17.385338651 Simplifying z + -18.5 = 17.385338651 Reorder the terms: -18.5 + z = 17.385338651 Solving -18.5 + z = 17.385338651 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '18.5' to each side of the equation. -18.5 + 18.5 + z = 17.385338651 + 18.5 Combine like terms: -18.5 + 18.5 = 0.0 0.0 + z = 17.385338651 + 18.5 z = 17.385338651 + 18.5 Combine like terms: 17.385338651 + 18.5 = 35.885338651 z = 35.885338651 Simplifying z = 35.885338651Subproblem 2
z + -18.5 = -17.385338651 Simplifying z + -18.5 = -17.385338651 Reorder the terms: -18.5 + z = -17.385338651 Solving -18.5 + z = -17.385338651 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '18.5' to each side of the equation. -18.5 + 18.5 + z = -17.385338651 + 18.5 Combine like terms: -18.5 + 18.5 = 0.0 0.0 + z = -17.385338651 + 18.5 z = -17.385338651 + 18.5 Combine like terms: -17.385338651 + 18.5 = 1.114661349 z = 1.114661349 Simplifying z = 1.114661349Solution
The solution to the problem is based on the solutions from the subproblems. z = {35.885338651, 1.114661349}
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