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Simplifying 3X2 + -6X + -7 = 0 Reorder the terms: -7 + -6X + 3X2 = 0 Solving -7 + -6X + 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'. -2.333333333 + -2X + X2 = 0 Move the constant term to the right: Add '2.333333333' to each side of the equation. -2.333333333 + -2X + 2.333333333 + X2 = 0 + 2.333333333 Reorder the terms: -2.333333333 + 2.333333333 + -2X + X2 = 0 + 2.333333333 Combine like terms: -2.333333333 + 2.333333333 = 0.000000000 0.000000000 + -2X + X2 = 0 + 2.333333333 -2X + X2 = 0 + 2.333333333 Combine like terms: 0 + 2.333333333 = 2.333333333 -2X + X2 = 2.333333333 The X term is -2X. Take half its coefficient (-1). Square it (1) and add it to both sides. Add '1' to each side of the equation. -2X + 1 + X2 = 2.333333333 + 1 Reorder the terms: 1 + -2X + X2 = 2.333333333 + 1 Combine like terms: 2.333333333 + 1 = 3.333333333 1 + -2X + X2 = 3.333333333 Factor a perfect square on the left side: (X + -1)(X + -1) = 3.333333333 Calculate the square root of the right side: 1.825741858 Break this problem into two subproblems by setting (X + -1) equal to 1.825741858 and -1.825741858.Subproblem 1
X + -1 = 1.825741858 Simplifying X + -1 = 1.825741858 Reorder the terms: -1 + X = 1.825741858 Solving -1 + X = 1.825741858 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + X = 1.825741858 + 1 Combine like terms: -1 + 1 = 0 0 + X = 1.825741858 + 1 X = 1.825741858 + 1 Combine like terms: 1.825741858 + 1 = 2.825741858 X = 2.825741858 Simplifying X = 2.825741858Subproblem 2
X + -1 = -1.825741858 Simplifying X + -1 = -1.825741858 Reorder the terms: -1 + X = -1.825741858 Solving -1 + X = -1.825741858 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + X = -1.825741858 + 1 Combine like terms: -1 + 1 = 0 0 + X = -1.825741858 + 1 X = -1.825741858 + 1 Combine like terms: -1.825741858 + 1 = -0.825741858 X = -0.825741858 Simplifying X = -0.825741858Solution
The solution to the problem is based on the solutions from the subproblems. X = {2.825741858, -0.825741858}
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