5x^2-98x+260=0

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Solution for 5x^2-98x+260=0 equation:


Simplifying
5x2 + -98x + 260 = 0

Reorder the terms:
260 + -98x + 5x2 = 0

Solving
260 + -98x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
52 + -19.6x + x2 = 0

Move the constant term to the right:

Add '-52' to each side of the equation.
52 + -19.6x + -52 + x2 = 0 + -52

Reorder the terms:
52 + -52 + -19.6x + x2 = 0 + -52

Combine like terms: 52 + -52 = 0
0 + -19.6x + x2 = 0 + -52
-19.6x + x2 = 0 + -52

Combine like terms: 0 + -52 = -52
-19.6x + x2 = -52

The x term is -19.6x.  Take half its coefficient (-9.8).
Square it (96.04) and add it to both sides.

Add '96.04' to each side of the equation.
-19.6x + 96.04 + x2 = -52 + 96.04

Reorder the terms:
96.04 + -19.6x + x2 = -52 + 96.04

Combine like terms: -52 + 96.04 = 44.04
96.04 + -19.6x + x2 = 44.04

Factor a perfect square on the left side:
(x + -9.8)(x + -9.8) = 44.04

Calculate the square root of the right side: 6.636264009

Break this problem into two subproblems by setting 
(x + -9.8) equal to 6.636264009 and -6.636264009.

Subproblem 1

x + -9.8 = 6.636264009 Simplifying x + -9.8 = 6.636264009 Reorder the terms: -9.8 + x = 6.636264009 Solving -9.8 + x = 6.636264009 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9.8' to each side of the equation. -9.8 + 9.8 + x = 6.636264009 + 9.8 Combine like terms: -9.8 + 9.8 = 0.0 0.0 + x = 6.636264009 + 9.8 x = 6.636264009 + 9.8 Combine like terms: 6.636264009 + 9.8 = 16.436264009 x = 16.436264009 Simplifying x = 16.436264009

Subproblem 2

x + -9.8 = -6.636264009 Simplifying x + -9.8 = -6.636264009 Reorder the terms: -9.8 + x = -6.636264009 Solving -9.8 + x = -6.636264009 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9.8' to each side of the equation. -9.8 + 9.8 + x = -6.636264009 + 9.8 Combine like terms: -9.8 + 9.8 = 0.0 0.0 + x = -6.636264009 + 9.8 x = -6.636264009 + 9.8 Combine like terms: -6.636264009 + 9.8 = 3.163735991 x = 3.163735991 Simplifying x = 3.163735991

Solution

The solution to the problem is based on the solutions from the subproblems. x = {16.436264009, 3.163735991}

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