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Simplifying (3x + 0.05) + (x)(x + 0.10) = 7.50 Reorder the terms: (0.05 + 3x) + (x)(x + 0.10) = 7.50 Remove parenthesis around (0.05 + 3x) 0.05 + 3x + (x)(x + 0.10) = 7.50 Reorder the terms: 0.05 + 3x + x(0.10 + x) = 7.50 0.05 + 3x + (0.10 * x + x * x) = 7.50 0.05 + 3x + (0.10x + x2) = 7.50 Combine like terms: 3x + 0.10x = 3.1x 0.05 + 3.1x + x2 = 7.50 Solving 0.05 + 3.1x + x2 = 7.50 Solving for variable 'x'. Reorder the terms: 0.05 + -7.50 + 3.1x + x2 = 7.50 + -7.50 Combine like terms: 0.05 + -7.50 = -7.45 -7.45 + 3.1x + x2 = 7.50 + -7.50 Combine like terms: 7.50 + -7.50 = 0.00 -7.45 + 3.1x + x2 = 0.00 Begin completing the square. Move the constant term to the right: Add '7.45' to each side of the equation. -7.45 + 3.1x + 7.45 + x2 = 0.00 + 7.45 Reorder the terms: -7.45 + 7.45 + 3.1x + x2 = 0.00 + 7.45 Combine like terms: -7.45 + 7.45 = 0.00 0.00 + 3.1x + x2 = 0.00 + 7.45 3.1x + x2 = 0.00 + 7.45 Combine like terms: 0.00 + 7.45 = 7.45 3.1x + x2 = 7.45 The x term is 3.1x. Take half its coefficient (1.55). Square it (2.4025) and add it to both sides. Add '2.4025' to each side of the equation. 3.1x + 2.4025 + x2 = 7.45 + 2.4025 Reorder the terms: 2.4025 + 3.1x + x2 = 7.45 + 2.4025 Combine like terms: 7.45 + 2.4025 = 9.8525 2.4025 + 3.1x + x2 = 9.8525 Factor a perfect square on the left side: (x + 1.55)(x + 1.55) = 9.8525 Calculate the square root of the right side: 3.138869223 Break this problem into two subproblems by setting (x + 1.55) equal to 3.138869223 and -3.138869223.Subproblem 1
x + 1.55 = 3.138869223 Simplifying x + 1.55 = 3.138869223 Reorder the terms: 1.55 + x = 3.138869223 Solving 1.55 + x = 3.138869223 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.55' to each side of the equation. 1.55 + -1.55 + x = 3.138869223 + -1.55 Combine like terms: 1.55 + -1.55 = 0.00 0.00 + x = 3.138869223 + -1.55 x = 3.138869223 + -1.55 Combine like terms: 3.138869223 + -1.55 = 1.588869223 x = 1.588869223 Simplifying x = 1.588869223Subproblem 2
x + 1.55 = -3.138869223 Simplifying x + 1.55 = -3.138869223 Reorder the terms: 1.55 + x = -3.138869223 Solving 1.55 + x = -3.138869223 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.55' to each side of the equation. 1.55 + -1.55 + x = -3.138869223 + -1.55 Combine like terms: 1.55 + -1.55 = 0.00 0.00 + x = -3.138869223 + -1.55 x = -3.138869223 + -1.55 Combine like terms: -3.138869223 + -1.55 = -4.688869223 x = -4.688869223 Simplifying x = -4.688869223Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.588869223, -4.688869223}
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