8-2x*10-2x*x=

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Solution for 8-2x*10-2x*x= equation:


Simplifying
8 + -2x * 10 + -2x * x = 0

Reorder the terms for easier multiplication:
8 + -2 * 10x + -2x * x = 0

Multiply -2 * 10
8 + -20x + -2x * x = 0

Multiply x * x
8 + -20x + -2x2 = 0

Solving
8 + -20x + -2x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(4 + -10x + -1x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(4 + -10x + -1x2)' equal to zero and attempt to solve: Simplifying 4 + -10x + -1x2 = 0 Solving 4 + -10x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -4 + 10x + x2 = 0 Move the constant term to the right: Add '4' to each side of the equation. -4 + 10x + 4 + x2 = 0 + 4 Reorder the terms: -4 + 4 + 10x + x2 = 0 + 4 Combine like terms: -4 + 4 = 0 0 + 10x + x2 = 0 + 4 10x + x2 = 0 + 4 Combine like terms: 0 + 4 = 4 10x + x2 = 4 The x term is 10x. Take half its coefficient (5). Square it (25) and add it to both sides. Add '25' to each side of the equation. 10x + 25 + x2 = 4 + 25 Reorder the terms: 25 + 10x + x2 = 4 + 25 Combine like terms: 4 + 25 = 29 25 + 10x + x2 = 29 Factor a perfect square on the left side: (x + 5)(x + 5) = 29 Calculate the square root of the right side: 5.385164807 Break this problem into two subproblems by setting (x + 5) equal to 5.385164807 and -5.385164807.

Subproblem 1

x + 5 = 5.385164807 Simplifying x + 5 = 5.385164807 Reorder the terms: 5 + x = 5.385164807 Solving 5 + x = 5.385164807 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 5.385164807 + -5 Combine like terms: 5 + -5 = 0 0 + x = 5.385164807 + -5 x = 5.385164807 + -5 Combine like terms: 5.385164807 + -5 = 0.385164807 x = 0.385164807 Simplifying x = 0.385164807

Subproblem 2

x + 5 = -5.385164807 Simplifying x + 5 = -5.385164807 Reorder the terms: 5 + x = -5.385164807 Solving 5 + x = -5.385164807 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = -5.385164807 + -5 Combine like terms: 5 + -5 = 0 0 + x = -5.385164807 + -5 x = -5.385164807 + -5 Combine like terms: -5.385164807 + -5 = -10.385164807 x = -10.385164807 Simplifying x = -10.385164807

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.385164807, -10.385164807}

Solution

x = {0.385164807, -10.385164807}

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