x=10x^2-29x+21

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Solution for x=10x^2-29x+21 equation:


Simplifying
x = 10x2 + -29x + 21

Reorder the terms:
x = 21 + -29x + 10x2

Solving
x = 21 + -29x + 10x2

Solving for variable 'x'.

Reorder the terms:
-21 + x + 29x + -10x2 = 21 + -29x + 10x2 + -21 + 29x + -10x2

Combine like terms: x + 29x = 30x
-21 + 30x + -10x2 = 21 + -29x + 10x2 + -21 + 29x + -10x2

Reorder the terms:
-21 + 30x + -10x2 = 21 + -21 + -29x + 29x + 10x2 + -10x2

Combine like terms: 21 + -21 = 0
-21 + 30x + -10x2 = 0 + -29x + 29x + 10x2 + -10x2
-21 + 30x + -10x2 = -29x + 29x + 10x2 + -10x2

Combine like terms: -29x + 29x = 0
-21 + 30x + -10x2 = 0 + 10x2 + -10x2
-21 + 30x + -10x2 = 10x2 + -10x2

Combine like terms: 10x2 + -10x2 = 0
-21 + 30x + -10x2 = 0

Begin completing the square.  Divide all terms by
-10 the coefficient of the squared term: 

Divide each side by '-10'.
2.1 + -3x + x2 = 0

Move the constant term to the right:

Add '-2.1' to each side of the equation.
2.1 + -3x + -2.1 + x2 = 0 + -2.1

Reorder the terms:
2.1 + -2.1 + -3x + x2 = 0 + -2.1

Combine like terms: 2.1 + -2.1 = 0.0
0.0 + -3x + x2 = 0 + -2.1
-3x + x2 = 0 + -2.1

Combine like terms: 0 + -2.1 = -2.1
-3x + x2 = -2.1

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = -2.1 + 2.25

Reorder the terms:
2.25 + -3x + x2 = -2.1 + 2.25

Combine like terms: -2.1 + 2.25 = 0.15
2.25 + -3x + x2 = 0.15

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 0.15

Calculate the square root of the right side: 0.387298335

Break this problem into two subproblems by setting 
(x + -1.5) equal to 0.387298335 and -0.387298335.

Subproblem 1

x + -1.5 = 0.387298335 Simplifying x + -1.5 = 0.387298335 Reorder the terms: -1.5 + x = 0.387298335 Solving -1.5 + x = 0.387298335 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 0.387298335 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 0.387298335 + 1.5 x = 0.387298335 + 1.5 Combine like terms: 0.387298335 + 1.5 = 1.887298335 x = 1.887298335 Simplifying x = 1.887298335

Subproblem 2

x + -1.5 = -0.387298335 Simplifying x + -1.5 = -0.387298335 Reorder the terms: -1.5 + x = -0.387298335 Solving -1.5 + x = -0.387298335 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -0.387298335 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -0.387298335 + 1.5 x = -0.387298335 + 1.5 Combine like terms: -0.387298335 + 1.5 = 1.112701665 x = 1.112701665 Simplifying x = 1.112701665

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.887298335, 1.112701665}

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