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Simplifying 4x2 + -11x + 5 = 0 Reorder the terms: 5 + -11x + 4x2 = 0 Solving 5 + -11x + 4x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. 1.25 + -2.75x + x2 = 0 Move the constant term to the right: Add '-1.25' to each side of the equation. 1.25 + -2.75x + -1.25 + x2 = 0 + -1.25 Reorder the terms: 1.25 + -1.25 + -2.75x + x2 = 0 + -1.25 Combine like terms: 1.25 + -1.25 = 0.00 0.00 + -2.75x + x2 = 0 + -1.25 -2.75x + x2 = 0 + -1.25 Combine like terms: 0 + -1.25 = -1.25 -2.75x + x2 = -1.25 The x term is -2.75x. Take half its coefficient (-1.375). Square it (1.890625) and add it to both sides. Add '1.890625' to each side of the equation. -2.75x + 1.890625 + x2 = -1.25 + 1.890625 Reorder the terms: 1.890625 + -2.75x + x2 = -1.25 + 1.890625 Combine like terms: -1.25 + 1.890625 = 0.640625 1.890625 + -2.75x + x2 = 0.640625 Factor a perfect square on the left side: (x + -1.375)(x + -1.375) = 0.640625 Calculate the square root of the right side: 0.80039053 Break this problem into two subproblems by setting (x + -1.375) equal to 0.80039053 and -0.80039053.Subproblem 1
x + -1.375 = 0.80039053 Simplifying x + -1.375 = 0.80039053 Reorder the terms: -1.375 + x = 0.80039053 Solving -1.375 + x = 0.80039053 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.375' to each side of the equation. -1.375 + 1.375 + x = 0.80039053 + 1.375 Combine like terms: -1.375 + 1.375 = 0.000 0.000 + x = 0.80039053 + 1.375 x = 0.80039053 + 1.375 Combine like terms: 0.80039053 + 1.375 = 2.17539053 x = 2.17539053 Simplifying x = 2.17539053Subproblem 2
x + -1.375 = -0.80039053 Simplifying x + -1.375 = -0.80039053 Reorder the terms: -1.375 + x = -0.80039053 Solving -1.375 + x = -0.80039053 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.375' to each side of the equation. -1.375 + 1.375 + x = -0.80039053 + 1.375 Combine like terms: -1.375 + 1.375 = 0.000 0.000 + x = -0.80039053 + 1.375 x = -0.80039053 + 1.375 Combine like terms: -0.80039053 + 1.375 = 0.57460947 x = 0.57460947 Simplifying x = 0.57460947Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.17539053, 0.57460947}
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