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Simplifying (-7x + 3) + (x2 + x + -9) = 0 Reorder the terms: (3 + -7x) + (x2 + x + -9) = 0 Remove parenthesis around (3 + -7x) 3 + -7x + (x2 + x + -9) = 0 Reorder the terms: 3 + -7x + (-9 + x + x2) = 0 Remove parenthesis around (-9 + x + x2) 3 + -7x + -9 + x + x2 = 0 Reorder the terms: 3 + -9 + -7x + x + x2 = 0 Combine like terms: 3 + -9 = -6 -6 + -7x + x + x2 = 0 Combine like terms: -7x + x = -6x -6 + -6x + x2 = 0 Solving -6 + -6x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '6' to each side of the equation. -6 + -6x + 6 + x2 = 0 + 6 Reorder the terms: -6 + 6 + -6x + x2 = 0 + 6 Combine like terms: -6 + 6 = 0 0 + -6x + x2 = 0 + 6 -6x + x2 = 0 + 6 Combine like terms: 0 + 6 = 6 -6x + x2 = 6 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 = 6 + 9 Reorder the terms: 9 + -6x + x2 = 6 + 9 Combine like terms: 6 + 9 = 15 9 + -6x + x2 = 15 Factor a perfect square on the left side: (x + -3)(x + -3) = 15 Calculate the square root of the right side: 3.872983346 Break this problem into two subproblems by setting (x + -3) equal to 3.872983346 and -3.872983346.Subproblem 1
x + -3 = 3.872983346 Simplifying x + -3 = 3.872983346 Reorder the terms: -3 + x = 3.872983346 Solving -3 + x = 3.872983346 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 = 3.872983346 + 3 Combine like terms: -3 + 3 = 0 0 + x = 3.872983346 + 3 x = 3.872983346 + 3 Combine like terms: 3.872983346 + 3 = 6.872983346 x = 6.872983346 Simplifying x = 6.872983346Subproblem 2
x + -3 = -3.872983346 Simplifying x + -3 = -3.872983346 Reorder the terms: -3 + x = -3.872983346 Solving -3 + x = -3.872983346 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 = -3.872983346 + 3 Combine like terms: -3 + 3 = 0 0 + x = -3.872983346 + 3 x = -3.872983346 + 3 Combine like terms: -3.872983346 + 3 = -0.872983346 x = -0.872983346 Simplifying x = -0.872983346Solution
The solution to the problem is based on the solutions from the subproblems. x = {6.872983346, -0.872983346}
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