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Simplifying 3x2 + 5 + -7x + -2 = 0 Reorder the terms: 5 + -2 + -7x + 3x2 = 0 Combine like terms: 5 + -2 = 3 3 + -7x + 3x2 = 0 Solving 3 + -7x + 3x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. 1 + -2.333333333x + x2 = 0 Move the constant term to the right: Add '-1' to each side of the equation. 1 + -2.333333333x + -1 + x2 = 0 + -1 Reorder the terms: 1 + -1 + -2.333333333x + x2 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -2.333333333x + x2 = 0 + -1 -2.333333333x + x2 = 0 + -1 Combine like terms: 0 + -1 = -1 -2.333333333x + x2 = -1 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 = -1 + 1.361111112 Reorder the terms: 1.361111112 + -2.333333333x + x2 = -1 + 1.361111112 Combine like terms: -1 + 1.361111112 = 0.361111112 1.361111112 + -2.333333333x + x2 = 0.361111112 Factor a perfect square on the left side: (x + -1.166666667)(x + -1.166666667) = 0.361111112 Calculate the square root of the right side: 0.600925213 Break this problem into two subproblems by setting (x + -1.166666667) equal to 0.600925213 and -0.600925213.Subproblem 1
x + -1.166666667 = 0.600925213 Simplifying x + -1.166666667 = 0.600925213 Reorder the terms: -1.166666667 + x = 0.600925213 Solving -1.166666667 + x = 0.600925213 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 = 0.600925213 + 1.166666667 Combine like terms: -1.166666667 + 1.166666667 = 0.000000000 0.000000000 + x = 0.600925213 + 1.166666667 x = 0.600925213 + 1.166666667 Combine like terms: 0.600925213 + 1.166666667 = 1.76759188 x = 1.76759188 Simplifying x = 1.76759188Subproblem 2
x + -1.166666667 = -0.600925213 Simplifying x + -1.166666667 = -0.600925213 Reorder the terms: -1.166666667 + x = -0.600925213 Solving -1.166666667 + x = -0.600925213 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 = -0.600925213 + 1.166666667 Combine like terms: -1.166666667 + 1.166666667 = 0.000000000 0.000000000 + x = -0.600925213 + 1.166666667 x = -0.600925213 + 1.166666667 Combine like terms: -0.600925213 + 1.166666667 = 0.565741454 x = 0.565741454 Simplifying x = 0.565741454Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.76759188, 0.565741454}
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