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Simplifying 16 = 3x + 4x2 Solving 16 = 3x + 4x2 Solving for variable 'x'. Reorder the terms: 16 + -3x + -4x2 = 3x + -3x + 4x2 + -4x2 Combine like terms: 3x + -3x = 0 16 + -3x + -4x2 = 0 + 4x2 + -4x2 16 + -3x + -4x2 = 4x2 + -4x2 Combine like terms: 4x2 + -4x2 = 0 16 + -3x + -4x2 = 0 Begin completing the square. Divide all terms by -4 the coefficient of the squared term: Divide each side by '-4'. -4 + 0.75x + x2 = 0 Move the constant term to the right: Add '4' to each side of the equation. -4 + 0.75x + 4 + x2 = 0 + 4 Reorder the terms: -4 + 4 + 0.75x + x2 = 0 + 4 Combine like terms: -4 + 4 = 0 0 + 0.75x + x2 = 0 + 4 0.75x + x2 = 0 + 4 Combine like terms: 0 + 4 = 4 0.75x + x2 = 4 The x term is 0.75x. Take half its coefficient (0.375). Square it (0.140625) and add it to both sides. Add '0.140625' to each side of the equation. 0.75x + 0.140625 + x2 = 4 + 0.140625 Reorder the terms: 0.140625 + 0.75x + x2 = 4 + 0.140625 Combine like terms: 4 + 0.140625 = 4.140625 0.140625 + 0.75x + x2 = 4.140625 Factor a perfect square on the left side: (x + 0.375)(x + 0.375) = 4.140625 Calculate the square root of the right side: 2.034852575 Break this problem into two subproblems by setting (x + 0.375) equal to 2.034852575 and -2.034852575.Subproblem 1
x + 0.375 = 2.034852575 Simplifying x + 0.375 = 2.034852575 Reorder the terms: 0.375 + x = 2.034852575 Solving 0.375 + x = 2.034852575 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.375' to each side of the equation. 0.375 + -0.375 + x = 2.034852575 + -0.375 Combine like terms: 0.375 + -0.375 = 0.000 0.000 + x = 2.034852575 + -0.375 x = 2.034852575 + -0.375 Combine like terms: 2.034852575 + -0.375 = 1.659852575 x = 1.659852575 Simplifying x = 1.659852575Subproblem 2
x + 0.375 = -2.034852575 Simplifying x + 0.375 = -2.034852575 Reorder the terms: 0.375 + x = -2.034852575 Solving 0.375 + x = -2.034852575 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.375' to each side of the equation. 0.375 + -0.375 + x = -2.034852575 + -0.375 Combine like terms: 0.375 + -0.375 = 0.000 0.000 + x = -2.034852575 + -0.375 x = -2.034852575 + -0.375 Combine like terms: -2.034852575 + -0.375 = -2.409852575 x = -2.409852575 Simplifying x = -2.409852575Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.659852575, -2.409852575}
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