-2x+41=5x^2-10x-210

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Solution for -2x+41=5x^2-10x-210 equation:


Simplifying
-2x + 41 = 5x2 + -10x + -210

Reorder the terms:
41 + -2x = 5x2 + -10x + -210

Reorder the terms:
41 + -2x = -210 + -10x + 5x2

Solving
41 + -2x = -210 + -10x + 5x2

Solving for variable 'x'.

Reorder the terms:
41 + 210 + -2x + 10x + -5x2 = -210 + -10x + 5x2 + 210 + 10x + -5x2

Combine like terms: 41 + 210 = 251
251 + -2x + 10x + -5x2 = -210 + -10x + 5x2 + 210 + 10x + -5x2

Combine like terms: -2x + 10x = 8x
251 + 8x + -5x2 = -210 + -10x + 5x2 + 210 + 10x + -5x2

Reorder the terms:
251 + 8x + -5x2 = -210 + 210 + -10x + 10x + 5x2 + -5x2

Combine like terms: -210 + 210 = 0
251 + 8x + -5x2 = 0 + -10x + 10x + 5x2 + -5x2
251 + 8x + -5x2 = -10x + 10x + 5x2 + -5x2

Combine like terms: -10x + 10x = 0
251 + 8x + -5x2 = 0 + 5x2 + -5x2
251 + 8x + -5x2 = 5x2 + -5x2

Combine like terms: 5x2 + -5x2 = 0
251 + 8x + -5x2 = 0

Begin completing the square.  Divide all terms by
-5 the coefficient of the squared term: 

Divide each side by '-5'.
-50.2 + -1.6x + x2 = 0

Move the constant term to the right:

Add '50.2' to each side of the equation.
-50.2 + -1.6x + 50.2 + x2 = 0 + 50.2

Reorder the terms:
-50.2 + 50.2 + -1.6x + x2 = 0 + 50.2

Combine like terms: -50.2 + 50.2 = 0.0
0.0 + -1.6x + x2 = 0 + 50.2
-1.6x + x2 = 0 + 50.2

Combine like terms: 0 + 50.2 = 50.2
-1.6x + x2 = 50.2

The x term is -1.6x.  Take half its coefficient (-0.8).
Square it (0.64) and add it to both sides.

Add '0.64' to each side of the equation.
-1.6x + 0.64 + x2 = 50.2 + 0.64

Reorder the terms:
0.64 + -1.6x + x2 = 50.2 + 0.64

Combine like terms: 50.2 + 0.64 = 50.84
0.64 + -1.6x + x2 = 50.84

Factor a perfect square on the left side:
(x + -0.8)(x + -0.8) = 50.84

Calculate the square root of the right side: 7.130217388

Break this problem into two subproblems by setting 
(x + -0.8) equal to 7.130217388 and -7.130217388.

Subproblem 1

x + -0.8 = 7.130217388 Simplifying x + -0.8 = 7.130217388 Reorder the terms: -0.8 + x = 7.130217388 Solving -0.8 + x = 7.130217388 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.8' to each side of the equation. -0.8 + 0.8 + x = 7.130217388 + 0.8 Combine like terms: -0.8 + 0.8 = 0.0 0.0 + x = 7.130217388 + 0.8 x = 7.130217388 + 0.8 Combine like terms: 7.130217388 + 0.8 = 7.930217388 x = 7.930217388 Simplifying x = 7.930217388

Subproblem 2

x + -0.8 = -7.130217388 Simplifying x + -0.8 = -7.130217388 Reorder the terms: -0.8 + x = -7.130217388 Solving -0.8 + x = -7.130217388 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.8' to each side of the equation. -0.8 + 0.8 + x = -7.130217388 + 0.8 Combine like terms: -0.8 + 0.8 = 0.0 0.0 + x = -7.130217388 + 0.8 x = -7.130217388 + 0.8 Combine like terms: -7.130217388 + 0.8 = -6.330217388 x = -6.330217388 Simplifying x = -6.330217388

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.930217388, -6.330217388}

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