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Simplifying 4x2 + -14x + 12 = 7 Reorder the terms: 12 + -14x + 4x2 = 7 Solving 12 + -14x + 4x2 = 7 Solving for variable 'x'. Reorder the terms: 12 + -7 + -14x + 4x2 = 7 + -7 Combine like terms: 12 + -7 = 5 5 + -14x + 4x2 = 7 + -7 Combine like terms: 7 + -7 = 0 5 + -14x + 4x2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. 1.25 + -3.5x + x2 = 0 Move the constant term to the right: Add '-1.25' to each side of the equation. 1.25 + -3.5x + -1.25 + x2 = 0 + -1.25 Reorder the terms: 1.25 + -1.25 + -3.5x + x2 = 0 + -1.25 Combine like terms: 1.25 + -1.25 = 0.00 0.00 + -3.5x + x2 = 0 + -1.25 -3.5x + x2 = 0 + -1.25 Combine like terms: 0 + -1.25 = -1.25 -3.5x + x2 = -1.25 The x term is -3.5x. Take half its coefficient (-1.75). Square it (3.0625) and add it to both sides. Add '3.0625' to each side of the equation. -3.5x + 3.0625 + x2 = -1.25 + 3.0625 Reorder the terms: 3.0625 + -3.5x + x2 = -1.25 + 3.0625 Combine like terms: -1.25 + 3.0625 = 1.8125 3.0625 + -3.5x + x2 = 1.8125 Factor a perfect square on the left side: (x + -1.75)(x + -1.75) = 1.8125 Calculate the square root of the right side: 1.346291202 Break this problem into two subproblems by setting (x + -1.75) equal to 1.346291202 and -1.346291202.Subproblem 1
x + -1.75 = 1.346291202 Simplifying x + -1.75 = 1.346291202 Reorder the terms: -1.75 + x = 1.346291202 Solving -1.75 + x = 1.346291202 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + x = 1.346291202 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + x = 1.346291202 + 1.75 x = 1.346291202 + 1.75 Combine like terms: 1.346291202 + 1.75 = 3.096291202 x = 3.096291202 Simplifying x = 3.096291202Subproblem 2
x + -1.75 = -1.346291202 Simplifying x + -1.75 = -1.346291202 Reorder the terms: -1.75 + x = -1.346291202 Solving -1.75 + x = -1.346291202 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + x = -1.346291202 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + x = -1.346291202 + 1.75 x = -1.346291202 + 1.75 Combine like terms: -1.346291202 + 1.75 = 0.403708798 x = 0.403708798 Simplifying x = 0.403708798Solution
The solution to the problem is based on the solutions from the subproblems. x = {3.096291202, 0.403708798}
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