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Simplifying 4z2 + -6z = 1 Reorder the terms: -6z + 4z2 = 1 Solving -6z + 4z2 = 1 Solving for variable 'z'. Reorder the terms: -1 + -6z + 4z2 = 1 + -1 Combine like terms: 1 + -1 = 0 -1 + -6z + 4z2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -0.25 + -1.5z + z2 = 0 Move the constant term to the right: Add '0.25' to each side of the equation. -0.25 + -1.5z + 0.25 + z2 = 0 + 0.25 Reorder the terms: -0.25 + 0.25 + -1.5z + z2 = 0 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + -1.5z + z2 = 0 + 0.25 -1.5z + z2 = 0 + 0.25 Combine like terms: 0 + 0.25 = 0.25 -1.5z + z2 = 0.25 The z term is -1.5z. Take half its coefficient (-0.75). Square it (0.5625) and add it to both sides. Add '0.5625' to each side of the equation. -1.5z + 0.5625 + z2 = 0.25 + 0.5625 Reorder the terms: 0.5625 + -1.5z + z2 = 0.25 + 0.5625 Combine like terms: 0.25 + 0.5625 = 0.8125 0.5625 + -1.5z + z2 = 0.8125 Factor a perfect square on the left side: (z + -0.75)(z + -0.75) = 0.8125 Calculate the square root of the right side: 0.901387819 Break this problem into two subproblems by setting (z + -0.75) equal to 0.901387819 and -0.901387819.Subproblem 1
z + -0.75 = 0.901387819 Simplifying z + -0.75 = 0.901387819 Reorder the terms: -0.75 + z = 0.901387819 Solving -0.75 + z = 0.901387819 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + z = 0.901387819 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + z = 0.901387819 + 0.75 z = 0.901387819 + 0.75 Combine like terms: 0.901387819 + 0.75 = 1.651387819 z = 1.651387819 Simplifying z = 1.651387819Subproblem 2
z + -0.75 = -0.901387819 Simplifying z + -0.75 = -0.901387819 Reorder the terms: -0.75 + z = -0.901387819 Solving -0.75 + z = -0.901387819 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + z = -0.901387819 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + z = -0.901387819 + 0.75 z = -0.901387819 + 0.75 Combine like terms: -0.901387819 + 0.75 = -0.151387819 z = -0.151387819 Simplifying z = -0.151387819Solution
The solution to the problem is based on the solutions from the subproblems. z = {1.651387819, -0.151387819}
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