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Simplifying 25x2 + -35x + -9 = 0 Reorder the terms: -9 + -35x + 25x2 = 0 Solving -9 + -35x + 25x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 25 the coefficient of the squared term: Divide each side by '25'. -0.36 + -1.4x + x2 = 0 Move the constant term to the right: Add '0.36' to each side of the equation. -0.36 + -1.4x + 0.36 + x2 = 0 + 0.36 Reorder the terms: -0.36 + 0.36 + -1.4x + x2 = 0 + 0.36 Combine like terms: -0.36 + 0.36 = 0.00 0.00 + -1.4x + x2 = 0 + 0.36 -1.4x + x2 = 0 + 0.36 Combine like terms: 0 + 0.36 = 0.36 -1.4x + x2 = 0.36 The x term is -1.4x. Take half its coefficient (-0.7). Square it (0.49) and add it to both sides. Add '0.49' to each side of the equation. -1.4x + 0.49 + x2 = 0.36 + 0.49 Reorder the terms: 0.49 + -1.4x + x2 = 0.36 + 0.49 Combine like terms: 0.36 + 0.49 = 0.85 0.49 + -1.4x + x2 = 0.85 Factor a perfect square on the left side: (x + -0.7)(x + -0.7) = 0.85 Calculate the square root of the right side: 0.921954446 Break this problem into two subproblems by setting (x + -0.7) equal to 0.921954446 and -0.921954446.Subproblem 1
x + -0.7 = 0.921954446 Simplifying x + -0.7 = 0.921954446 Reorder the terms: -0.7 + x = 0.921954446 Solving -0.7 + x = 0.921954446 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.7' to each side of the equation. -0.7 + 0.7 + x = 0.921954446 + 0.7 Combine like terms: -0.7 + 0.7 = 0.0 0.0 + x = 0.921954446 + 0.7 x = 0.921954446 + 0.7 Combine like terms: 0.921954446 + 0.7 = 1.621954446 x = 1.621954446 Simplifying x = 1.621954446Subproblem 2
x + -0.7 = -0.921954446 Simplifying x + -0.7 = -0.921954446 Reorder the terms: -0.7 + x = -0.921954446 Solving -0.7 + x = -0.921954446 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.7' to each side of the equation. -0.7 + 0.7 + x = -0.921954446 + 0.7 Combine like terms: -0.7 + 0.7 = 0.0 0.0 + x = -0.921954446 + 0.7 x = -0.921954446 + 0.7 Combine like terms: -0.921954446 + 0.7 = -0.221954446 x = -0.221954446 Simplifying x = -0.221954446Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.621954446, -0.221954446}
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