7x^2-2800x+4300=0

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Solution for 7x^2-2800x+4300=0 equation:


Simplifying
7x2 + -2800x + 4300 = 0

Reorder the terms:
4300 + -2800x + 7x2 = 0

Solving
4300 + -2800x + 7x2 = 0

Solving for variable 'x'.

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

Divide each side by '7'.
614.2857143 + -400x + x2 = 0

Move the constant term to the right:

Add '-614.2857143' to each side of the equation.
614.2857143 + -400x + -614.2857143 + x2 = 0 + -614.2857143

Reorder the terms:
614.2857143 + -614.2857143 + -400x + x2 = 0 + -614.2857143

Combine like terms: 614.2857143 + -614.2857143 = 0.0000000
0.0000000 + -400x + x2 = 0 + -614.2857143
-400x + x2 = 0 + -614.2857143

Combine like terms: 0 + -614.2857143 = -614.2857143
-400x + x2 = -614.2857143

The x term is -400x.  Take half its coefficient (-200).
Square it (40000) and add it to both sides.

Add '40000' to each side of the equation.
-400x + 40000 + x2 = -614.2857143 + 40000

Reorder the terms:
40000 + -400x + x2 = -614.2857143 + 40000

Combine like terms: -614.2857143 + 40000 = 39385.7142857
40000 + -400x + x2 = 39385.7142857

Factor a perfect square on the left side:
(x + -200)(x + -200) = 39385.7142857

Calculate the square root of the right side: 198.458343956

Break this problem into two subproblems by setting 
(x + -200) equal to 198.458343956 and -198.458343956.

Subproblem 1

x + -200 = 198.458343956 Simplifying x + -200 = 198.458343956 Reorder the terms: -200 + x = 198.458343956 Solving -200 + x = 198.458343956 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '200' to each side of the equation. -200 + 200 + x = 198.458343956 + 200 Combine like terms: -200 + 200 = 0 0 + x = 198.458343956 + 200 x = 198.458343956 + 200 Combine like terms: 198.458343956 + 200 = 398.458343956 x = 398.458343956 Simplifying x = 398.458343956

Subproblem 2

x + -200 = -198.458343956 Simplifying x + -200 = -198.458343956 Reorder the terms: -200 + x = -198.458343956 Solving -200 + x = -198.458343956 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '200' to each side of the equation. -200 + 200 + x = -198.458343956 + 200 Combine like terms: -200 + 200 = 0 0 + x = -198.458343956 + 200 x = -198.458343956 + 200 Combine like terms: -198.458343956 + 200 = 1.541656044 x = 1.541656044 Simplifying x = 1.541656044

Solution

The solution to the problem is based on the solutions from the subproblems. x = {398.458343956, 1.541656044}

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