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Simplifying 5x2 + 16x + -1 = 0 Reorder the terms: -1 + 16x + 5x2 = 0 Solving -1 + 16x + 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'. -0.2 + 3.2x + x2 = 0 Move the constant term to the right: Add '0.2' to each side of the equation. -0.2 + 3.2x + 0.2 + x2 = 0 + 0.2 Reorder the terms: -0.2 + 0.2 + 3.2x + x2 = 0 + 0.2 Combine like terms: -0.2 + 0.2 = 0.0 0.0 + 3.2x + x2 = 0 + 0.2 3.2x + x2 = 0 + 0.2 Combine like terms: 0 + 0.2 = 0.2 3.2x + x2 = 0.2 The x term is 3.2x. Take half its coefficient (1.6). Square it (2.56) and add it to both sides. Add '2.56' to each side of the equation. 3.2x + 2.56 + x2 = 0.2 + 2.56 Reorder the terms: 2.56 + 3.2x + x2 = 0.2 + 2.56 Combine like terms: 0.2 + 2.56 = 2.76 2.56 + 3.2x + x2 = 2.76 Factor a perfect square on the left side: (x + 1.6)(x + 1.6) = 2.76 Calculate the square root of the right side: 1.661324773 Break this problem into two subproblems by setting (x + 1.6) equal to 1.661324773 and -1.661324773.Subproblem 1
x + 1.6 = 1.661324773 Simplifying x + 1.6 = 1.661324773 Reorder the terms: 1.6 + x = 1.661324773 Solving 1.6 + x = 1.661324773 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.6' to each side of the equation. 1.6 + -1.6 + x = 1.661324773 + -1.6 Combine like terms: 1.6 + -1.6 = 0.0 0.0 + x = 1.661324773 + -1.6 x = 1.661324773 + -1.6 Combine like terms: 1.661324773 + -1.6 = 0.061324773 x = 0.061324773 Simplifying x = 0.061324773Subproblem 2
x + 1.6 = -1.661324773 Simplifying x + 1.6 = -1.661324773 Reorder the terms: 1.6 + x = -1.661324773 Solving 1.6 + x = -1.661324773 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.6' to each side of the equation. 1.6 + -1.6 + x = -1.661324773 + -1.6 Combine like terms: 1.6 + -1.6 = 0.0 0.0 + x = -1.661324773 + -1.6 x = -1.661324773 + -1.6 Combine like terms: -1.661324773 + -1.6 = -3.261324773 x = -3.261324773 Simplifying x = -3.261324773Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.061324773, -3.261324773}
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