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Simplifying 2x2 + 21x + -95 = 0 Reorder the terms: -95 + 21x + 2x2 = 0 Solving -95 + 21x + 2x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -47.5 + 10.5x + x2 = 0 Move the constant term to the right: Add '47.5' to each side of the equation. -47.5 + 10.5x + 47.5 + x2 = 0 + 47.5 Reorder the terms: -47.5 + 47.5 + 10.5x + x2 = 0 + 47.5 Combine like terms: -47.5 + 47.5 = 0.0 0.0 + 10.5x + x2 = 0 + 47.5 10.5x + x2 = 0 + 47.5 Combine like terms: 0 + 47.5 = 47.5 10.5x + x2 = 47.5 The x term is 10.5x. Take half its coefficient (5.25). Square it (27.5625) and add it to both sides. Add '27.5625' to each side of the equation. 10.5x + 27.5625 + x2 = 47.5 + 27.5625 Reorder the terms: 27.5625 + 10.5x + x2 = 47.5 + 27.5625 Combine like terms: 47.5 + 27.5625 = 75.0625 27.5625 + 10.5x + x2 = 75.0625 Factor a perfect square on the left side: (x + 5.25)(x + 5.25) = 75.0625 Calculate the square root of the right side: 8.663861726 Break this problem into two subproblems by setting (x + 5.25) equal to 8.663861726 and -8.663861726.Subproblem 1
x + 5.25 = 8.663861726 Simplifying x + 5.25 = 8.663861726 Reorder the terms: 5.25 + x = 8.663861726 Solving 5.25 + x = 8.663861726 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.25' to each side of the equation. 5.25 + -5.25 + x = 8.663861726 + -5.25 Combine like terms: 5.25 + -5.25 = 0.00 0.00 + x = 8.663861726 + -5.25 x = 8.663861726 + -5.25 Combine like terms: 8.663861726 + -5.25 = 3.413861726 x = 3.413861726 Simplifying x = 3.413861726Subproblem 2
x + 5.25 = -8.663861726 Simplifying x + 5.25 = -8.663861726 Reorder the terms: 5.25 + x = -8.663861726 Solving 5.25 + x = -8.663861726 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.25' to each side of the equation. 5.25 + -5.25 + x = -8.663861726 + -5.25 Combine like terms: 5.25 + -5.25 = 0.00 0.00 + x = -8.663861726 + -5.25 x = -8.663861726 + -5.25 Combine like terms: -8.663861726 + -5.25 = -13.913861726 x = -13.913861726 Simplifying x = -13.913861726Solution
The solution to the problem is based on the solutions from the subproblems. x = {3.413861726, -13.913861726}
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