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Simplifying x2 + -16x + 9 = 0 Reorder the terms: 9 + -16x + x2 = 0 Solving 9 + -16x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-9' to each side of the equation. 9 + -16x + -9 + x2 = 0 + -9 Reorder the terms: 9 + -9 + -16x + x2 = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -16x + x2 = 0 + -9 -16x + x2 = 0 + -9 Combine like terms: 0 + -9 = -9 -16x + x2 = -9 The x term is -16x. Take half its coefficient (-8). Square it (64) and add it to both sides. Add '64' to each side of the equation. -16x + 64 + x2 = -9 + 64 Reorder the terms: 64 + -16x + x2 = -9 + 64 Combine like terms: -9 + 64 = 55 64 + -16x + x2 = 55 Factor a perfect square on the left side: (x + -8)(x + -8) = 55 Calculate the square root of the right side: 7.416198487 Break this problem into two subproblems by setting (x + -8) equal to 7.416198487 and -7.416198487.Subproblem 1
x + -8 = 7.416198487 Simplifying x + -8 = 7.416198487 Reorder the terms: -8 + x = 7.416198487 Solving -8 + x = 7.416198487 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = 7.416198487 + 8 Combine like terms: -8 + 8 = 0 0 + x = 7.416198487 + 8 x = 7.416198487 + 8 Combine like terms: 7.416198487 + 8 = 15.416198487 x = 15.416198487 Simplifying x = 15.416198487Subproblem 2
x + -8 = -7.416198487 Simplifying x + -8 = -7.416198487 Reorder the terms: -8 + x = -7.416198487 Solving -8 + x = -7.416198487 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = -7.416198487 + 8 Combine like terms: -8 + 8 = 0 0 + x = -7.416198487 + 8 x = -7.416198487 + 8 Combine like terms: -7.416198487 + 8 = 0.583801513 x = 0.583801513 Simplifying x = 0.583801513Solution
The solution to the problem is based on the solutions from the subproblems. x = {15.416198487, 0.583801513}
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