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Simplifying (x2 + 1) + (4x + 3) + (2x2 + 3x + -2) = 180 Reorder the terms: (1 + x2) + (4x + 3) + (2x2 + 3x + -2) = 180 Remove parenthesis around (1 + x2) 1 + x2 + (4x + 3) + (2x2 + 3x + -2) = 180 Reorder the terms: 1 + x2 + (3 + 4x) + (2x2 + 3x + -2) = 180 Remove parenthesis around (3 + 4x) 1 + x2 + 3 + 4x + (2x2 + 3x + -2) = 180 Reorder the terms: 1 + x2 + 3 + 4x + (-2 + 3x + 2x2) = 180 Remove parenthesis around (-2 + 3x + 2x2) 1 + x2 + 3 + 4x + -2 + 3x + 2x2 = 180 Reorder the terms: 1 + 3 + -2 + 4x + 3x + x2 + 2x2 = 180 Combine like terms: 1 + 3 = 4 4 + -2 + 4x + 3x + x2 + 2x2 = 180 Combine like terms: 4 + -2 = 2 2 + 4x + 3x + x2 + 2x2 = 180 Combine like terms: 4x + 3x = 7x 2 + 7x + x2 + 2x2 = 180 Combine like terms: x2 + 2x2 = 3x2 2 + 7x + 3x2 = 180 Solving 2 + 7x + 3x2 = 180 Solving for variable 'x'. Reorder the terms: 2 + -180 + 7x + 3x2 = 180 + -180 Combine like terms: 2 + -180 = -178 -178 + 7x + 3x2 = 180 + -180 Combine like terms: 180 + -180 = 0 -178 + 7x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. -59.33333333 + 2.333333333x + x2 = 0 Move the constant term to the right: Add '59.33333333' to each side of the equation. -59.33333333 + 2.333333333x + 59.33333333 + x2 = 0 + 59.33333333 Reorder the terms: -59.33333333 + 59.33333333 + 2.333333333x + x2 = 0 + 59.33333333 Combine like terms: -59.33333333 + 59.33333333 = 0.00000000 0.00000000 + 2.333333333x + x2 = 0 + 59.33333333 2.333333333x + x2 = 0 + 59.33333333 Combine like terms: 0 + 59.33333333 = 59.33333333 2.333333333x + x2 = 59.33333333 The x term is 2.333333333x. Take half its coefficient (1.166666667). Square it (1.361111112) and add it to both sides. Add '1.361111112' to each side of the equation. 2.333333333x + 1.361111112 + x2 = 59.33333333 + 1.361111112 Reorder the terms: 1.361111112 + 2.333333333x + x2 = 59.33333333 + 1.361111112 Combine like terms: 59.33333333 + 1.361111112 = 60.694444442 1.361111112 + 2.333333333x + x2 = 60.694444442 Factor a perfect square on the left side: (x + 1.166666667)(x + 1.166666667) = 60.694444442 Calculate the square root of the right side: 7.790663928 Break this problem into two subproblems by setting (x + 1.166666667) equal to 7.790663928 and -7.790663928.Subproblem 1
x + 1.166666667 = 7.790663928 Simplifying x + 1.166666667 = 7.790663928 Reorder the terms: 1.166666667 + x = 7.790663928 Solving 1.166666667 + x = 7.790663928 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.166666667' to each side of the equation. 1.166666667 + -1.166666667 + x = 7.790663928 + -1.166666667 Combine like terms: 1.166666667 + -1.166666667 = 0.000000000 0.000000000 + x = 7.790663928 + -1.166666667 x = 7.790663928 + -1.166666667 Combine like terms: 7.790663928 + -1.166666667 = 6.623997261 x = 6.623997261 Simplifying x = 6.623997261Subproblem 2
x + 1.166666667 = -7.790663928 Simplifying x + 1.166666667 = -7.790663928 Reorder the terms: 1.166666667 + x = -7.790663928 Solving 1.166666667 + x = -7.790663928 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.166666667' to each side of the equation. 1.166666667 + -1.166666667 + x = -7.790663928 + -1.166666667 Combine like terms: 1.166666667 + -1.166666667 = 0.000000000 0.000000000 + x = -7.790663928 + -1.166666667 x = -7.790663928 + -1.166666667 Combine like terms: -7.790663928 + -1.166666667 = -8.957330595 x = -8.957330595 Simplifying x = -8.957330595Solution
The solution to the problem is based on the solutions from the subproblems. x = {6.623997261, -8.957330595}
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