5x^2-70x+214=0

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Solution for 5x^2-70x+214=0 equation:


Simplifying
5x2 + -70x + 214 = 0

Reorder the terms:
214 + -70x + 5x2 = 0

Solving
214 + -70x + 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'.
42.8 + -14x + x2 = 0

Move the constant term to the right:

Add '-42.8' to each side of the equation.
42.8 + -14x + -42.8 + x2 = 0 + -42.8

Reorder the terms:
42.8 + -42.8 + -14x + x2 = 0 + -42.8

Combine like terms: 42.8 + -42.8 = 0.0
0.0 + -14x + x2 = 0 + -42.8
-14x + x2 = 0 + -42.8

Combine like terms: 0 + -42.8 = -42.8
-14x + x2 = -42.8

The x term is -14x.  Take half its coefficient (-7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
-14x + 49 + x2 = -42.8 + 49

Reorder the terms:
49 + -14x + x2 = -42.8 + 49

Combine like terms: -42.8 + 49 = 6.2
49 + -14x + x2 = 6.2

Factor a perfect square on the left side:
(x + -7)(x + -7) = 6.2

Calculate the square root of the right side: 2.48997992

Break this problem into two subproblems by setting 
(x + -7) equal to 2.48997992 and -2.48997992.

Subproblem 1

x + -7 = 2.48997992 Simplifying x + -7 = 2.48997992 Reorder the terms: -7 + x = 2.48997992 Solving -7 + x = 2.48997992 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = 2.48997992 + 7 Combine like terms: -7 + 7 = 0 0 + x = 2.48997992 + 7 x = 2.48997992 + 7 Combine like terms: 2.48997992 + 7 = 9.48997992 x = 9.48997992 Simplifying x = 9.48997992

Subproblem 2

x + -7 = -2.48997992 Simplifying x + -7 = -2.48997992 Reorder the terms: -7 + x = -2.48997992 Solving -7 + x = -2.48997992 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = -2.48997992 + 7 Combine like terms: -7 + 7 = 0 0 + x = -2.48997992 + 7 x = -2.48997992 + 7 Combine like terms: -2.48997992 + 7 = 4.51002008 x = 4.51002008 Simplifying x = 4.51002008

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.48997992, 4.51002008}

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