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Simplifying 4x2 + 6x + -51 = 0 Reorder the terms: -51 + 6x + 4x2 = 0 Solving -51 + 6x + 4x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -12.75 + 1.5x + x2 = 0 Move the constant term to the right: Add '12.75' to each side of the equation. -12.75 + 1.5x + 12.75 + x2 = 0 + 12.75 Reorder the terms: -12.75 + 12.75 + 1.5x + x2 = 0 + 12.75 Combine like terms: -12.75 + 12.75 = 0.00 0.00 + 1.5x + x2 = 0 + 12.75 1.5x + x2 = 0 + 12.75 Combine like terms: 0 + 12.75 = 12.75 1.5x + x2 = 12.75 The x term is 1.5x. Take half its coefficient (0.75). Square it (0.5625) and add it to both sides. Add '0.5625' to each side of the equation. 1.5x + 0.5625 + x2 = 12.75 + 0.5625 Reorder the terms: 0.5625 + 1.5x + x2 = 12.75 + 0.5625 Combine like terms: 12.75 + 0.5625 = 13.3125 0.5625 + 1.5x + x2 = 13.3125 Factor a perfect square on the left side: (x + 0.75)(x + 0.75) = 13.3125 Calculate the square root of the right side: 3.64862988 Break this problem into two subproblems by setting (x + 0.75) equal to 3.64862988 and -3.64862988.Subproblem 1
x + 0.75 = 3.64862988 Simplifying x + 0.75 = 3.64862988 Reorder the terms: 0.75 + x = 3.64862988 Solving 0.75 + x = 3.64862988 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = 3.64862988 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = 3.64862988 + -0.75 x = 3.64862988 + -0.75 Combine like terms: 3.64862988 + -0.75 = 2.89862988 x = 2.89862988 Simplifying x = 2.89862988Subproblem 2
x + 0.75 = -3.64862988 Simplifying x + 0.75 = -3.64862988 Reorder the terms: 0.75 + x = -3.64862988 Solving 0.75 + x = -3.64862988 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = -3.64862988 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = -3.64862988 + -0.75 x = -3.64862988 + -0.75 Combine like terms: -3.64862988 + -0.75 = -4.39862988 x = -4.39862988 Simplifying x = -4.39862988Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.89862988, -4.39862988}
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