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Simplifying 16x2 + -9x + -4 = 0 Reorder the terms: -4 + -9x + 16x2 = 0 Solving -4 + -9x + 16x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 16 the coefficient of the squared term: Divide each side by '16'. -0.25 + -0.5625x + x2 = 0 Move the constant term to the right: Add '0.25' to each side of the equation. -0.25 + -0.5625x + 0.25 + x2 = 0 + 0.25 Reorder the terms: -0.25 + 0.25 + -0.5625x + x2 = 0 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + -0.5625x + x2 = 0 + 0.25 -0.5625x + x2 = 0 + 0.25 Combine like terms: 0 + 0.25 = 0.25 -0.5625x + x2 = 0.25 The x term is -0.5625x. Take half its coefficient (-0.28125). Square it (0.0791015625) and add it to both sides. Add '0.0791015625' to each side of the equation. -0.5625x + 0.0791015625 + x2 = 0.25 + 0.0791015625 Reorder the terms: 0.0791015625 + -0.5625x + x2 = 0.25 + 0.0791015625 Combine like terms: 0.25 + 0.0791015625 = 0.3291015625 0.0791015625 + -0.5625x + x2 = 0.3291015625 Factor a perfect square on the left side: (x + -0.28125)(x + -0.28125) = 0.3291015625 Calculate the square root of the right side: 0.573673742 Break this problem into two subproblems by setting (x + -0.28125) equal to 0.573673742 and -0.573673742.Subproblem 1
x + -0.28125 = 0.573673742 Simplifying x + -0.28125 = 0.573673742 Reorder the terms: -0.28125 + x = 0.573673742 Solving -0.28125 + x = 0.573673742 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.28125' to each side of the equation. -0.28125 + 0.28125 + x = 0.573673742 + 0.28125 Combine like terms: -0.28125 + 0.28125 = 0.00000 0.00000 + x = 0.573673742 + 0.28125 x = 0.573673742 + 0.28125 Combine like terms: 0.573673742 + 0.28125 = 0.854923742 x = 0.854923742 Simplifying x = 0.854923742Subproblem 2
x + -0.28125 = -0.573673742 Simplifying x + -0.28125 = -0.573673742 Reorder the terms: -0.28125 + x = -0.573673742 Solving -0.28125 + x = -0.573673742 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.28125' to each side of the equation. -0.28125 + 0.28125 + x = -0.573673742 + 0.28125 Combine like terms: -0.28125 + 0.28125 = 0.00000 0.00000 + x = -0.573673742 + 0.28125 x = -0.573673742 + 0.28125 Combine like terms: -0.573673742 + 0.28125 = -0.292423742 x = -0.292423742 Simplifying x = -0.292423742Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.854923742, -0.292423742}
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