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Simplifying 9x2 + 2x = 14 Reorder the terms: 2x + 9x2 = 14 Solving 2x + 9x2 = 14 Solving for variable 'x'. Reorder the terms: -14 + 2x + 9x2 = 14 + -14 Combine like terms: 14 + -14 = 0 -14 + 2x + 9x2 = 0 Begin completing the square. Divide all terms by 9 the coefficient of the squared term: Divide each side by '9'. -1.555555556 + 0.2222222222x + x2 = 0 Move the constant term to the right: Add '1.555555556' to each side of the equation. -1.555555556 + 0.2222222222x + 1.555555556 + x2 = 0 + 1.555555556 Reorder the terms: -1.555555556 + 1.555555556 + 0.2222222222x + x2 = 0 + 1.555555556 Combine like terms: -1.555555556 + 1.555555556 = 0.000000000 0.000000000 + 0.2222222222x + x2 = 0 + 1.555555556 0.2222222222x + x2 = 0 + 1.555555556 Combine like terms: 0 + 1.555555556 = 1.555555556 0.2222222222x + x2 = 1.555555556 The x term is 0.2222222222x. Take half its coefficient (0.1111111111). Square it (0.01234567901) and add it to both sides. Add '0.01234567901' to each side of the equation. 0.2222222222x + 0.01234567901 + x2 = 1.555555556 + 0.01234567901 Reorder the terms: 0.01234567901 + 0.2222222222x + x2 = 1.555555556 + 0.01234567901 Combine like terms: 1.555555556 + 0.01234567901 = 1.56790123501 0.01234567901 + 0.2222222222x + x2 = 1.56790123501 Factor a perfect square on the left side: (x + 0.1111111111)(x + 0.1111111111) = 1.56790123501 Calculate the square root of the right side: 1.25215863 Break this problem into two subproblems by setting (x + 0.1111111111) equal to 1.25215863 and -1.25215863.Subproblem 1
x + 0.1111111111 = 1.25215863 Simplifying x + 0.1111111111 = 1.25215863 Reorder the terms: 0.1111111111 + x = 1.25215863 Solving 0.1111111111 + x = 1.25215863 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1111111111' to each side of the equation. 0.1111111111 + -0.1111111111 + x = 1.25215863 + -0.1111111111 Combine like terms: 0.1111111111 + -0.1111111111 = 0.0000000000 0.0000000000 + x = 1.25215863 + -0.1111111111 x = 1.25215863 + -0.1111111111 Combine like terms: 1.25215863 + -0.1111111111 = 1.1410475189 x = 1.1410475189 Simplifying x = 1.1410475189Subproblem 2
x + 0.1111111111 = -1.25215863 Simplifying x + 0.1111111111 = -1.25215863 Reorder the terms: 0.1111111111 + x = -1.25215863 Solving 0.1111111111 + x = -1.25215863 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1111111111' to each side of the equation. 0.1111111111 + -0.1111111111 + x = -1.25215863 + -0.1111111111 Combine like terms: 0.1111111111 + -0.1111111111 = 0.0000000000 0.0000000000 + x = -1.25215863 + -0.1111111111 x = -1.25215863 + -0.1111111111 Combine like terms: -1.25215863 + -0.1111111111 = -1.3632697411 x = -1.3632697411 Simplifying x = -1.3632697411Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.1410475189, -1.3632697411}
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