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Simplifying 6x + -1x2 = 7.2 Solving 6x + -1x2 = 7.2 Solving for variable 'x'. Reorder the terms: -7.2 + 6x + -1x2 = 7.2 + -7.2 Combine like terms: 7.2 + -7.2 = 0.0 -7.2 + 6x + -1x2 = 0.0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. 7.2 + -6x + x2 = 0.0 Move the constant term to the right: Add '-7.2' to each side of the equation. 7.2 + -6x + -7.2 + x2 = 0.0 + -7.2 Reorder the terms: 7.2 + -7.2 + -6x + x2 = 0.0 + -7.2 Combine like terms: 7.2 + -7.2 = 0.0 0.0 + -6x + x2 = 0.0 + -7.2 -6x + x2 = 0.0 + -7.2 Combine like terms: 0.0 + -7.2 = -7.2 -6x + x2 = -7.2 The x term is -6x. Take half its coefficient (-3). Square it (9) and add it to both sides. Add '9' to each side of the equation. -6x + 9 + x2 = -7.2 + 9 Reorder the terms: 9 + -6x + x2 = -7.2 + 9 Combine like terms: -7.2 + 9 = 1.8 9 + -6x + x2 = 1.8 Factor a perfect square on the left side: (x + -3)(x + -3) = 1.8 Calculate the square root of the right side: 1.341640787 Break this problem into two subproblems by setting (x + -3) equal to 1.341640787 and -1.341640787.Subproblem 1
x + -3 = 1.341640787 Simplifying x + -3 = 1.341640787 Reorder the terms: -3 + x = 1.341640787 Solving -3 + x = 1.341640787 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 1.341640787 + 3 Combine like terms: -3 + 3 = 0 0 + x = 1.341640787 + 3 x = 1.341640787 + 3 Combine like terms: 1.341640787 + 3 = 4.341640787 x = 4.341640787 Simplifying x = 4.341640787Subproblem 2
x + -3 = -1.341640787 Simplifying x + -3 = -1.341640787 Reorder the terms: -3 + x = -1.341640787 Solving -3 + x = -1.341640787 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = -1.341640787 + 3 Combine like terms: -3 + 3 = 0 0 + x = -1.341640787 + 3 x = -1.341640787 + 3 Combine like terms: -1.341640787 + 3 = 1.658359213 x = 1.658359213 Simplifying x = 1.658359213Solution
The solution to the problem is based on the solutions from the subproblems. x = {4.341640787, 1.658359213}
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