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Simplifying 6(4z + -1) * 2(z + 4) = 5(z + 1) Reorder the terms: 6(-1 + 4z) * 2(z + 4) = 5(z + 1) Reorder the terms: 6(-1 + 4z) * 2(4 + z) = 5(z + 1) Reorder the terms for easier multiplication: 6 * 2(-1 + 4z)(4 + z) = 5(z + 1) Multiply 6 * 2 12(-1 + 4z)(4 + z) = 5(z + 1) Multiply (-1 + 4z) * (4 + z) 12(-1(4 + z) + 4z * (4 + z)) = 5(z + 1) 12((4 * -1 + z * -1) + 4z * (4 + z)) = 5(z + 1) 12((-4 + -1z) + 4z * (4 + z)) = 5(z + 1) 12(-4 + -1z + (4 * 4z + z * 4z)) = 5(z + 1) 12(-4 + -1z + (16z + 4z2)) = 5(z + 1) Combine like terms: -1z + 16z = 15z 12(-4 + 15z + 4z2) = 5(z + 1) (-4 * 12 + 15z * 12 + 4z2 * 12) = 5(z + 1) (-48 + 180z + 48z2) = 5(z + 1) Reorder the terms: -48 + 180z + 48z2 = 5(1 + z) -48 + 180z + 48z2 = (1 * 5 + z * 5) -48 + 180z + 48z2 = (5 + 5z) Solving -48 + 180z + 48z2 = 5 + 5z Solving for variable 'z'. Reorder the terms: -48 + -5 + 180z + -5z + 48z2 = 5 + 5z + -5 + -5z Combine like terms: -48 + -5 = -53 -53 + 180z + -5z + 48z2 = 5 + 5z + -5 + -5z Combine like terms: 180z + -5z = 175z -53 + 175z + 48z2 = 5 + 5z + -5 + -5z Reorder the terms: -53 + 175z + 48z2 = 5 + -5 + 5z + -5z Combine like terms: 5 + -5 = 0 -53 + 175z + 48z2 = 0 + 5z + -5z -53 + 175z + 48z2 = 5z + -5z Combine like terms: 5z + -5z = 0 -53 + 175z + 48z2 = 0 Begin completing the square. Divide all terms by 48 the coefficient of the squared term: Divide each side by '48'. -1.104166667 + 3.645833333z + z2 = 0 Move the constant term to the right: Add '1.104166667' to each side of the equation. -1.104166667 + 3.645833333z + 1.104166667 + z2 = 0 + 1.104166667 Reorder the terms: -1.104166667 + 1.104166667 + 3.645833333z + z2 = 0 + 1.104166667 Combine like terms: -1.104166667 + 1.104166667 = 0.000000000 0.000000000 + 3.645833333z + z2 = 0 + 1.104166667 3.645833333z + z2 = 0 + 1.104166667 Combine like terms: 0 + 1.104166667 = 1.104166667 3.645833333z + z2 = 1.104166667 The z term is 3.645833333z. Take half its coefficient (1.822916667). Square it (3.323025175) and add it to both sides. Add '3.323025175' to each side of the equation. 3.645833333z + 3.323025175 + z2 = 1.104166667 + 3.323025175 Reorder the terms: 3.323025175 + 3.645833333z + z2 = 1.104166667 + 3.323025175 Combine like terms: 1.104166667 + 3.323025175 = 4.427191842 3.323025175 + 3.645833333z + z2 = 4.427191842 Factor a perfect square on the left side: (z + 1.822916667)(z + 1.822916667) = 4.427191842 Calculate the square root of the right side: 2.104089314 Break this problem into two subproblems by setting (z + 1.822916667) equal to 2.104089314 and -2.104089314.Subproblem 1
z + 1.822916667 = 2.104089314 Simplifying z + 1.822916667 = 2.104089314 Reorder the terms: 1.822916667 + z = 2.104089314 Solving 1.822916667 + z = 2.104089314 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-1.822916667' to each side of the equation. 1.822916667 + -1.822916667 + z = 2.104089314 + -1.822916667 Combine like terms: 1.822916667 + -1.822916667 = 0.000000000 0.000000000 + z = 2.104089314 + -1.822916667 z = 2.104089314 + -1.822916667 Combine like terms: 2.104089314 + -1.822916667 = 0.281172647 z = 0.281172647 Simplifying z = 0.281172647Subproblem 2
z + 1.822916667 = -2.104089314 Simplifying z + 1.822916667 = -2.104089314 Reorder the terms: 1.822916667 + z = -2.104089314 Solving 1.822916667 + z = -2.104089314 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-1.822916667' to each side of the equation. 1.822916667 + -1.822916667 + z = -2.104089314 + -1.822916667 Combine like terms: 1.822916667 + -1.822916667 = 0.000000000 0.000000000 + z = -2.104089314 + -1.822916667 z = -2.104089314 + -1.822916667 Combine like terms: -2.104089314 + -1.822916667 = -3.927005981 z = -3.927005981 Simplifying z = -3.927005981Solution
The solution to the problem is based on the solutions from the subproblems. z = {0.281172647, -3.927005981}
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