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Simplifying 4x2 + 11x = 63 Reorder the terms: 11x + 4x2 = 63 Solving 11x + 4x2 = 63 Solving for variable 'x'. Reorder the terms: -63 + 11x + 4x2 = 63 + -63 Combine like terms: 63 + -63 = 0 -63 + 11x + 4x2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -15.75 + 2.75x + x2 = 0 Move the constant term to the right: Add '15.75' to each side of the equation. -15.75 + 2.75x + 15.75 + x2 = 0 + 15.75 Reorder the terms: -15.75 + 15.75 + 2.75x + x2 = 0 + 15.75 Combine like terms: -15.75 + 15.75 = 0.00 0.00 + 2.75x + x2 = 0 + 15.75 2.75x + x2 = 0 + 15.75 Combine like terms: 0 + 15.75 = 15.75 2.75x + x2 = 15.75 The x term is 2.75x. Take half its coefficient (1.375). Square it (1.890625) and add it to both sides. Add '1.890625' to each side of the equation. 2.75x + 1.890625 + x2 = 15.75 + 1.890625 Reorder the terms: 1.890625 + 2.75x + x2 = 15.75 + 1.890625 Combine like terms: 15.75 + 1.890625 = 17.640625 1.890625 + 2.75x + x2 = 17.640625 Factor a perfect square on the left side: (x + 1.375)(x + 1.375) = 17.640625 Calculate the square root of the right side: 4.200074404 Break this problem into two subproblems by setting (x + 1.375) equal to 4.200074404 and -4.200074404.Subproblem 1
x + 1.375 = 4.200074404 Simplifying x + 1.375 = 4.200074404 Reorder the terms: 1.375 + x = 4.200074404 Solving 1.375 + x = 4.200074404 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.375' to each side of the equation. 1.375 + -1.375 + x = 4.200074404 + -1.375 Combine like terms: 1.375 + -1.375 = 0.000 0.000 + x = 4.200074404 + -1.375 x = 4.200074404 + -1.375 Combine like terms: 4.200074404 + -1.375 = 2.825074404 x = 2.825074404 Simplifying x = 2.825074404Subproblem 2
x + 1.375 = -4.200074404 Simplifying x + 1.375 = -4.200074404 Reorder the terms: 1.375 + x = -4.200074404 Solving 1.375 + x = -4.200074404 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.375' to each side of the equation. 1.375 + -1.375 + x = -4.200074404 + -1.375 Combine like terms: 1.375 + -1.375 = 0.000 0.000 + x = -4.200074404 + -1.375 x = -4.200074404 + -1.375 Combine like terms: -4.200074404 + -1.375 = -5.575074404 x = -5.575074404 Simplifying x = -5.575074404Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.825074404, -5.575074404}
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