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Simplifying x2 + 14x = 99 Reorder the terms: 14x + x2 = 99 Solving 14x + x2 = 99 Solving for variable 'x'. Reorder the terms: -99 + 14x + x2 = 99 + -99 Combine like terms: 99 + -99 = 0 -99 + 14x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '99' to each side of the equation. -99 + 14x + 99 + x2 = 0 + 99 Reorder the terms: -99 + 99 + 14x + x2 = 0 + 99 Combine like terms: -99 + 99 = 0 0 + 14x + x2 = 0 + 99 14x + x2 = 0 + 99 Combine like terms: 0 + 99 = 99 14x + x2 = 99 The x term is 14x. Take half its coefficient (7). Square it (49) and add it to both sides. Add '49' to each side of the equation. 14x + 49 + x2 = 99 + 49 Reorder the terms: 49 + 14x + x2 = 99 + 49 Combine like terms: 99 + 49 = 148 49 + 14x + x2 = 148 Factor a perfect square on the left side: (x + 7)(x + 7) = 148 Calculate the square root of the right side: 12.165525061 Break this problem into two subproblems by setting (x + 7) equal to 12.165525061 and -12.165525061.Subproblem 1
x + 7 = 12.165525061 Simplifying x + 7 = 12.165525061 Reorder the terms: 7 + x = 12.165525061 Solving 7 + x = 12.165525061 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + x = 12.165525061 + -7 Combine like terms: 7 + -7 = 0 0 + x = 12.165525061 + -7 x = 12.165525061 + -7 Combine like terms: 12.165525061 + -7 = 5.165525061 x = 5.165525061 Simplifying x = 5.165525061Subproblem 2
x + 7 = -12.165525061 Simplifying x + 7 = -12.165525061 Reorder the terms: 7 + x = -12.165525061 Solving 7 + x = -12.165525061 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + x = -12.165525061 + -7 Combine like terms: 7 + -7 = 0 0 + x = -12.165525061 + -7 x = -12.165525061 + -7 Combine like terms: -12.165525061 + -7 = -19.165525061 x = -19.165525061 Simplifying x = -19.165525061Solution
The solution to the problem is based on the solutions from the subproblems. x = {5.165525061, -19.165525061}
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