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Simplifying z2 + z + -49 = 0 Reorder the terms: -49 + z + z2 = 0 Solving -49 + z + z2 = 0 Solving for variable 'z'. Begin completing the square. Move the constant term to the right: Add '49' to each side of the equation. -49 + z + 49 + z2 = 0 + 49 Reorder the terms: -49 + 49 + z + z2 = 0 + 49 Combine like terms: -49 + 49 = 0 0 + z + z2 = 0 + 49 z + z2 = 0 + 49 Combine like terms: 0 + 49 = 49 z + z2 = 49 The z term is z. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. z + 0.25 + z2 = 49 + 0.25 Reorder the terms: 0.25 + z + z2 = 49 + 0.25 Combine like terms: 49 + 0.25 = 49.25 0.25 + z + z2 = 49.25 Factor a perfect square on the left side: (z + 0.5)(z + 0.5) = 49.25 Calculate the square root of the right side: 7.017834424 Break this problem into two subproblems by setting (z + 0.5) equal to 7.017834424 and -7.017834424.Subproblem 1
z + 0.5 = 7.017834424 Simplifying z + 0.5 = 7.017834424 Reorder the terms: 0.5 + z = 7.017834424 Solving 0.5 + z = 7.017834424 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + z = 7.017834424 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + z = 7.017834424 + -0.5 z = 7.017834424 + -0.5 Combine like terms: 7.017834424 + -0.5 = 6.517834424 z = 6.517834424 Simplifying z = 6.517834424Subproblem 2
z + 0.5 = -7.017834424 Simplifying z + 0.5 = -7.017834424 Reorder the terms: 0.5 + z = -7.017834424 Solving 0.5 + z = -7.017834424 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + z = -7.017834424 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + z = -7.017834424 + -0.5 z = -7.017834424 + -0.5 Combine like terms: -7.017834424 + -0.5 = -7.517834424 z = -7.517834424 Simplifying z = -7.517834424Solution
The solution to the problem is based on the solutions from the subproblems. z = {6.517834424, -7.517834424}
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