9x(9x^2-4x+7)=

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Solution for 9x(9x^2-4x+7)= equation:


Simplifying
9x(9x2 + -4x + 7) = 0

Reorder the terms:
9x(7 + -4x + 9x2) = 0
(7 * 9x + -4x * 9x + 9x2 * 9x) = 0
(63x + -36x2 + 81x3) = 0

Solving
63x + -36x2 + 81x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '9x'.
9x(7 + -4x + 9x2) = 0

Ignore the factor 9.

Subproblem 1

Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0

Subproblem 2

Set the factor '(7 + -4x + 9x2)' equal to zero and attempt to solve: Simplifying 7 + -4x + 9x2 = 0 Solving 7 + -4x + 9x2 = 0 Begin completing the square. Divide all terms by 9 the coefficient of the squared term: Divide each side by '9'. 0.7777777778 + -0.4444444444x + x2 = 0 Move the constant term to the right: Add '-0.7777777778' to each side of the equation. 0.7777777778 + -0.4444444444x + -0.7777777778 + x2 = 0 + -0.7777777778 Reorder the terms: 0.7777777778 + -0.7777777778 + -0.4444444444x + x2 = 0 + -0.7777777778 Combine like terms: 0.7777777778 + -0.7777777778 = 0.0000000000 0.0000000000 + -0.4444444444x + x2 = 0 + -0.7777777778 -0.4444444444x + x2 = 0 + -0.7777777778 Combine like terms: 0 + -0.7777777778 = -0.7777777778 -0.4444444444x + x2 = -0.7777777778 The x term is -0.4444444444x. Take half its coefficient (-0.2222222222). Square it (0.04938271604) and add it to both sides. Add '0.04938271604' to each side of the equation. -0.4444444444x + 0.04938271604 + x2 = -0.7777777778 + 0.04938271604 Reorder the terms: 0.04938271604 + -0.4444444444x + x2 = -0.7777777778 + 0.04938271604 Combine like terms: -0.7777777778 + 0.04938271604 = -0.72839506176 0.04938271604 + -0.4444444444x + x2 = -0.72839506176 Factor a perfect square on the left side: (x + -0.2222222222)(x + -0.2222222222) = -0.72839506176 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.

Solution

x = {0}

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