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Simplifying 5x2 + -14x + 2 = 0 Reorder the terms: 2 + -14x + 5x2 = 0 Solving 2 + -14x + 5x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. 0.4 + -2.8x + x2 = 0 Move the constant term to the right: Add '-0.4' to each side of the equation. 0.4 + -2.8x + -0.4 + x2 = 0 + -0.4 Reorder the terms: 0.4 + -0.4 + -2.8x + x2 = 0 + -0.4 Combine like terms: 0.4 + -0.4 = 0.0 0.0 + -2.8x + x2 = 0 + -0.4 -2.8x + x2 = 0 + -0.4 Combine like terms: 0 + -0.4 = -0.4 -2.8x + x2 = -0.4 The x term is -2.8x. Take half its coefficient (-1.4). Square it (1.96) and add it to both sides. Add '1.96' to each side of the equation. -2.8x + 1.96 + x2 = -0.4 + 1.96 Reorder the terms: 1.96 + -2.8x + x2 = -0.4 + 1.96 Combine like terms: -0.4 + 1.96 = 1.56 1.96 + -2.8x + x2 = 1.56 Factor a perfect square on the left side: (x + -1.4)(x + -1.4) = 1.56 Calculate the square root of the right side: 1.2489996 Break this problem into two subproblems by setting (x + -1.4) equal to 1.2489996 and -1.2489996.Subproblem 1
x + -1.4 = 1.2489996 Simplifying x + -1.4 = 1.2489996 Reorder the terms: -1.4 + x = 1.2489996 Solving -1.4 + x = 1.2489996 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.4' to each side of the equation. -1.4 + 1.4 + x = 1.2489996 + 1.4 Combine like terms: -1.4 + 1.4 = 0.0 0.0 + x = 1.2489996 + 1.4 x = 1.2489996 + 1.4 Combine like terms: 1.2489996 + 1.4 = 2.6489996 x = 2.6489996 Simplifying x = 2.6489996Subproblem 2
x + -1.4 = -1.2489996 Simplifying x + -1.4 = -1.2489996 Reorder the terms: -1.4 + x = -1.2489996 Solving -1.4 + x = -1.2489996 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.4' to each side of the equation. -1.4 + 1.4 + x = -1.2489996 + 1.4 Combine like terms: -1.4 + 1.4 = 0.0 0.0 + x = -1.2489996 + 1.4 x = -1.2489996 + 1.4 Combine like terms: -1.2489996 + 1.4 = 0.1510004 x = 0.1510004 Simplifying x = 0.1510004Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.6489996, 0.1510004}
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