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Simplifying 5 = -16x2 + 45x + 6 Reorder the terms: 5 = 6 + 45x + -16x2 Solving 5 = 6 + 45x + -16x2 Solving for variable 'x'. Combine like terms: 5 + -6 = -1 -1 + -45x + 16x2 = 6 + 45x + -16x2 + -6 + -45x + 16x2 Reorder the terms: -1 + -45x + 16x2 = 6 + -6 + 45x + -45x + -16x2 + 16x2 Combine like terms: 6 + -6 = 0 -1 + -45x + 16x2 = 0 + 45x + -45x + -16x2 + 16x2 -1 + -45x + 16x2 = 45x + -45x + -16x2 + 16x2 Combine like terms: 45x + -45x = 0 -1 + -45x + 16x2 = 0 + -16x2 + 16x2 -1 + -45x + 16x2 = -16x2 + 16x2 Combine like terms: -16x2 + 16x2 = 0 -1 + -45x + 16x2 = 0 Begin completing the square. Divide all terms by 16 the coefficient of the squared term: Divide each side by '16'. -0.0625 + -2.8125x + x2 = 0 Move the constant term to the right: Add '0.0625' to each side of the equation. -0.0625 + -2.8125x + 0.0625 + x2 = 0 + 0.0625 Reorder the terms: -0.0625 + 0.0625 + -2.8125x + x2 = 0 + 0.0625 Combine like terms: -0.0625 + 0.0625 = 0.0000 0.0000 + -2.8125x + x2 = 0 + 0.0625 -2.8125x + x2 = 0 + 0.0625 Combine like terms: 0 + 0.0625 = 0.0625 -2.8125x + x2 = 0.0625 The x term is -2.8125x. Take half its coefficient (-1.40625). Square it (1.977539063) and add it to both sides. Add '1.977539063' to each side of the equation. -2.8125x + 1.977539063 + x2 = 0.0625 + 1.977539063 Reorder the terms: 1.977539063 + -2.8125x + x2 = 0.0625 + 1.977539063 Combine like terms: 0.0625 + 1.977539063 = 2.040039063 1.977539063 + -2.8125x + x2 = 2.040039063 Factor a perfect square on the left side: (x + -1.40625)(x + -1.40625) = 2.040039063 Calculate the square root of the right side: 1.42829936 Break this problem into two subproblems by setting (x + -1.40625) equal to 1.42829936 and -1.42829936.Subproblem 1
x + -1.40625 = 1.42829936 Simplifying x + -1.40625 = 1.42829936 Reorder the terms: -1.40625 + x = 1.42829936 Solving -1.40625 + x = 1.42829936 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.40625' to each side of the equation. -1.40625 + 1.40625 + x = 1.42829936 + 1.40625 Combine like terms: -1.40625 + 1.40625 = 0.00000 0.00000 + x = 1.42829936 + 1.40625 x = 1.42829936 + 1.40625 Combine like terms: 1.42829936 + 1.40625 = 2.83454936 x = 2.83454936 Simplifying x = 2.83454936Subproblem 2
x + -1.40625 = -1.42829936 Simplifying x + -1.40625 = -1.42829936 Reorder the terms: -1.40625 + x = -1.42829936 Solving -1.40625 + x = -1.42829936 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.40625' to each side of the equation. -1.40625 + 1.40625 + x = -1.42829936 + 1.40625 Combine like terms: -1.40625 + 1.40625 = 0.00000 0.00000 + x = -1.42829936 + 1.40625 x = -1.42829936 + 1.40625 Combine like terms: -1.42829936 + 1.40625 = -0.02204936 x = -0.02204936 Simplifying x = -0.02204936Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.83454936, -0.02204936}
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