4x^4-18x^3+6x^2=0

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Solution for 4x^4-18x^3+6x^2=0 equation:


Simplifying
4x4 + -18x3 + 6x2 = 0

Reorder the terms:
6x2 + -18x3 + 4x4 = 0

Solving
6x2 + -18x3 + 4x4 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2x2'.
2x2(3 + -9x + 2x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor 'x2' equal to zero and attempt to solve: Simplifying x2 = 0 Solving x2 = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x2 = 0 Take the square root of each side: x = {0}

Subproblem 2

Set the factor '(3 + -9x + 2x2)' equal to zero and attempt to solve: Simplifying 3 + -9x + 2x2 = 0 Solving 3 + -9x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 1.5 + -4.5x + x2 = 0 Move the constant term to the right: Add '-1.5' to each side of the equation. 1.5 + -4.5x + -1.5 + x2 = 0 + -1.5 Reorder the terms: 1.5 + -1.5 + -4.5x + x2 = 0 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + -4.5x + x2 = 0 + -1.5 -4.5x + x2 = 0 + -1.5 Combine like terms: 0 + -1.5 = -1.5 -4.5x + x2 = -1.5 The x term is -4.5x. Take half its coefficient (-2.25). Square it (5.0625) and add it to both sides. Add '5.0625' to each side of the equation. -4.5x + 5.0625 + x2 = -1.5 + 5.0625 Reorder the terms: 5.0625 + -4.5x + x2 = -1.5 + 5.0625 Combine like terms: -1.5 + 5.0625 = 3.5625 5.0625 + -4.5x + x2 = 3.5625 Factor a perfect square on the left side: (x + -2.25)(x + -2.25) = 3.5625 Calculate the square root of the right side: 1.887458609 Break this problem into two subproblems by setting (x + -2.25) equal to 1.887458609 and -1.887458609.

Subproblem 1

x + -2.25 = 1.887458609 Simplifying x + -2.25 = 1.887458609 Reorder the terms: -2.25 + x = 1.887458609 Solving -2.25 + x = 1.887458609 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = 1.887458609 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = 1.887458609 + 2.25 x = 1.887458609 + 2.25 Combine like terms: 1.887458609 + 2.25 = 4.137458609 x = 4.137458609 Simplifying x = 4.137458609

Subproblem 2

x + -2.25 = -1.887458609 Simplifying x + -2.25 = -1.887458609 Reorder the terms: -2.25 + x = -1.887458609 Solving -2.25 + x = -1.887458609 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = -1.887458609 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = -1.887458609 + 2.25 x = -1.887458609 + 2.25 Combine like terms: -1.887458609 + 2.25 = 0.362541391 x = 0.362541391 Simplifying x = 0.362541391

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.137458609, 0.362541391}

Solution

x = {0, 4.137458609, 0.362541391}

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