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Simplifying 9x4 + 8x2 + 1 = 0 Reorder the terms: 1 + 8x2 + 9x4 = 0 Solving 1 + 8x2 + 9x4 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 9 the coefficient of the squared term: Divide each side by '9'. 0.1111111111 + 0.8888888889x2 + x4 = 0 Move the constant term to the right: Add '-0.1111111111' to each side of the equation. 0.1111111111 + 0.8888888889x2 + -0.1111111111 + x4 = 0 + -0.1111111111 Reorder the terms: 0.1111111111 + -0.1111111111 + 0.8888888889x2 + x4 = 0 + -0.1111111111 Combine like terms: 0.1111111111 + -0.1111111111 = 0.0000000000 0.0000000000 + 0.8888888889x2 + x4 = 0 + -0.1111111111 0.8888888889x2 + x4 = 0 + -0.1111111111 Combine like terms: 0 + -0.1111111111 = -0.1111111111 0.8888888889x2 + x4 = -0.1111111111 The x term is 0.8888888889x2. Take half its coefficient (0.4444444445). Square it (0.1975308642) and add it to both sides. Add '0.1975308642' to each side of the equation. 0.8888888889x2 + 0.1975308642 + x4 = -0.1111111111 + 0.1975308642 Reorder the terms: 0.1975308642 + 0.8888888889x2 + x4 = -0.1111111111 + 0.1975308642 Combine like terms: -0.1111111111 + 0.1975308642 = 0.0864197531 0.1975308642 + 0.8888888889x2 + x4 = 0.0864197531 Factor a perfect square on the left side: (x2 + 0.4444444445)(x2 + 0.4444444445) = 0.0864197531 Calculate the square root of the right side: 0.293972368 Break this problem into two subproblems by setting (x2 + 0.4444444445) equal to 0.293972368 and -0.293972368.Subproblem 1
x2 + 0.4444444445 = 0.293972368 Simplifying x2 + 0.4444444445 = 0.293972368 Reorder the terms: 0.4444444445 + x2 = 0.293972368 Solving 0.4444444445 + x2 = 0.293972368 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.4444444445' to each side of the equation. 0.4444444445 + -0.4444444445 + x2 = 0.293972368 + -0.4444444445 Combine like terms: 0.4444444445 + -0.4444444445 = 0.0000000000 0.0000000000 + x2 = 0.293972368 + -0.4444444445 x2 = 0.293972368 + -0.4444444445 Combine like terms: 0.293972368 + -0.4444444445 = -0.1504720765 x2 = -0.1504720765 Simplifying x2 = -0.1504720765 Reorder the terms: 0.1504720765 + x2 = -0.1504720765 + 0.1504720765 Combine like terms: -0.1504720765 + 0.1504720765 = 0.0000000000 0.1504720765 + x2 = 0.0000000000 The solution to this equation could not be determined.This subproblem is being ignored because a solution could not be determined.Subproblem 2
x2 + 0.4444444445 = -0.293972368 Simplifying x2 + 0.4444444445 = -0.293972368 Reorder the terms: 0.4444444445 + x2 = -0.293972368 Solving 0.4444444445 + x2 = -0.293972368 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.4444444445' to each side of the equation. 0.4444444445 + -0.4444444445 + x2 = -0.293972368 + -0.4444444445 Combine like terms: 0.4444444445 + -0.4444444445 = 0.0000000000 0.0000000000 + x2 = -0.293972368 + -0.4444444445 x2 = -0.293972368 + -0.4444444445 Combine like terms: -0.293972368 + -0.4444444445 = -0.7384168125 x2 = -0.7384168125 Simplifying x2 = -0.7384168125 Reorder the terms: 0.7384168125 + x2 = -0.7384168125 + 0.7384168125 Combine like terms: -0.7384168125 + 0.7384168125 = 0.0000000000 0.7384168125 + x2 = 0.0000000000 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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