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Simplifying x2 + -12x + 8 = 40 Reorder the terms: 8 + -12x + x2 = 40 Solving 8 + -12x + x2 = 40 Solving for variable 'x'. Reorder the terms: 8 + -40 + -12x + x2 = 40 + -40 Combine like terms: 8 + -40 = -32 -32 + -12x + x2 = 40 + -40 Combine like terms: 40 + -40 = 0 -32 + -12x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '32' to each side of the equation. -32 + -12x + 32 + x2 = 0 + 32 Reorder the terms: -32 + 32 + -12x + x2 = 0 + 32 Combine like terms: -32 + 32 = 0 0 + -12x + x2 = 0 + 32 -12x + x2 = 0 + 32 Combine like terms: 0 + 32 = 32 -12x + x2 = 32 The x term is -12x. Take half its coefficient (-6). Square it (36) and add it to both sides. Add '36' to each side of the equation. -12x + 36 + x2 = 32 + 36 Reorder the terms: 36 + -12x + x2 = 32 + 36 Combine like terms: 32 + 36 = 68 36 + -12x + x2 = 68 Factor a perfect square on the left side: (x + -6)(x + -6) = 68 Calculate the square root of the right side: 8.246211251 Break this problem into two subproblems by setting (x + -6) equal to 8.246211251 and -8.246211251.Subproblem 1
x + -6 = 8.246211251 Simplifying x + -6 = 8.246211251 Reorder the terms: -6 + x = 8.246211251 Solving -6 + x = 8.246211251 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = 8.246211251 + 6 Combine like terms: -6 + 6 = 0 0 + x = 8.246211251 + 6 x = 8.246211251 + 6 Combine like terms: 8.246211251 + 6 = 14.246211251 x = 14.246211251 Simplifying x = 14.246211251Subproblem 2
x + -6 = -8.246211251 Simplifying x + -6 = -8.246211251 Reorder the terms: -6 + x = -8.246211251 Solving -6 + x = -8.246211251 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = -8.246211251 + 6 Combine like terms: -6 + 6 = 0 0 + x = -8.246211251 + 6 x = -8.246211251 + 6 Combine like terms: -8.246211251 + 6 = -2.246211251 x = -2.246211251 Simplifying x = -2.246211251Solution
The solution to the problem is based on the solutions from the subproblems. x = {14.246211251, -2.246211251}
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