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Simplifying 7x4 + 16x2 + -3 = 0 Reorder the terms: -3 + 16x2 + 7x4 = 0 Solving -3 + 16x2 + 7x4 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 7 the coefficient of the squared term: Divide each side by '7'. -0.4285714286 + 2.285714286x2 + x4 = 0 Move the constant term to the right: Add '0.4285714286' to each side of the equation. -0.4285714286 + 2.285714286x2 + 0.4285714286 + x4 = 0 + 0.4285714286 Reorder the terms: -0.4285714286 + 0.4285714286 + 2.285714286x2 + x4 = 0 + 0.4285714286 Combine like terms: -0.4285714286 + 0.4285714286 = 0.0000000000 0.0000000000 + 2.285714286x2 + x4 = 0 + 0.4285714286 2.285714286x2 + x4 = 0 + 0.4285714286 Combine like terms: 0 + 0.4285714286 = 0.4285714286 2.285714286x2 + x4 = 0.4285714286 The x term is 2.285714286x2. Take half its coefficient (1.142857143). Square it (1.306122449) and add it to both sides. Add '1.306122449' to each side of the equation. 2.285714286x2 + 1.306122449 + x4 = 0.4285714286 + 1.306122449 Reorder the terms: 1.306122449 + 2.285714286x2 + x4 = 0.4285714286 + 1.306122449 Combine like terms: 0.4285714286 + 1.306122449 = 1.7346938776 1.306122449 + 2.285714286x2 + x4 = 1.7346938776 Factor a perfect square on the left side: (x2 + 1.142857143)(x2 + 1.142857143) = 1.7346938776 Calculate the square root of the right side: 1.31707778 Break this problem into two subproblems by setting (x2 + 1.142857143) equal to 1.31707778 and -1.31707778.Subproblem 1
x2 + 1.142857143 = 1.31707778 Simplifying x2 + 1.142857143 = 1.31707778 Reorder the terms: 1.142857143 + x2 = 1.31707778 Solving 1.142857143 + x2 = 1.31707778 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.142857143' to each side of the equation. 1.142857143 + -1.142857143 + x2 = 1.31707778 + -1.142857143 Combine like terms: 1.142857143 + -1.142857143 = 0.000000000 0.000000000 + x2 = 1.31707778 + -1.142857143 x2 = 1.31707778 + -1.142857143 Combine like terms: 1.31707778 + -1.142857143 = 0.174220637 x2 = 0.174220637 Simplifying x2 = 0.174220637 Take the square root of each side: x = {-0.417397457, 0.417397457}Subproblem 2
x2 + 1.142857143 = -1.31707778 Simplifying x2 + 1.142857143 = -1.31707778 Reorder the terms: 1.142857143 + x2 = -1.31707778 Solving 1.142857143 + x2 = -1.31707778 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.142857143' to each side of the equation. 1.142857143 + -1.142857143 + x2 = -1.31707778 + -1.142857143 Combine like terms: 1.142857143 + -1.142857143 = 0.000000000 0.000000000 + x2 = -1.31707778 + -1.142857143 x2 = -1.31707778 + -1.142857143 Combine like terms: -1.31707778 + -1.142857143 = -2.459934923 x2 = -2.459934923 Simplifying x2 = -2.459934923 Reorder the terms: 2.459934923 + x2 = -2.459934923 + 2.459934923 Combine like terms: -2.459934923 + 2.459934923 = 0.000000000 2.459934923 + x2 = 0.000000000 The solution to this equation could not be determined.This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.
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