7x^2-202.3x+1453.9=0

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Solution for 7x^2-202.3x+1453.9=0 equation:


Simplifying
7x2 + -202.3x + 1453.9 = 0

Reorder the terms:
1453.9 + -202.3x + 7x2 = 0

Solving
1453.9 + -202.3x + 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'.
207.7 + -28.9x + x2 = 0

Move the constant term to the right:

Add '-207.7' to each side of the equation.
207.7 + -28.9x + -207.7 + x2 = 0 + -207.7

Reorder the terms:
207.7 + -207.7 + -28.9x + x2 = 0 + -207.7

Combine like terms: 207.7 + -207.7 = 0.0
0.0 + -28.9x + x2 = 0 + -207.7
-28.9x + x2 = 0 + -207.7

Combine like terms: 0 + -207.7 = -207.7
-28.9x + x2 = -207.7

The x term is -28.9x.  Take half its coefficient (-14.45).
Square it (208.8025) and add it to both sides.

Add '208.8025' to each side of the equation.
-28.9x + 208.8025 + x2 = -207.7 + 208.8025

Reorder the terms:
208.8025 + -28.9x + x2 = -207.7 + 208.8025

Combine like terms: -207.7 + 208.8025 = 1.1025
208.8025 + -28.9x + x2 = 1.1025

Factor a perfect square on the left side:
(x + -14.45)(x + -14.45) = 1.1025

Calculate the square root of the right side: 1.05

Break this problem into two subproblems by setting 
(x + -14.45) equal to 1.05 and -1.05.

Subproblem 1

x + -14.45 = 1.05 Simplifying x + -14.45 = 1.05 Reorder the terms: -14.45 + x = 1.05 Solving -14.45 + x = 1.05 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '14.45' to each side of the equation. -14.45 + 14.45 + x = 1.05 + 14.45 Combine like terms: -14.45 + 14.45 = 0.00 0.00 + x = 1.05 + 14.45 x = 1.05 + 14.45 Combine like terms: 1.05 + 14.45 = 15.5 x = 15.5 Simplifying x = 15.5

Subproblem 2

x + -14.45 = -1.05 Simplifying x + -14.45 = -1.05 Reorder the terms: -14.45 + x = -1.05 Solving -14.45 + x = -1.05 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '14.45' to each side of the equation. -14.45 + 14.45 + x = -1.05 + 14.45 Combine like terms: -14.45 + 14.45 = 0.00 0.00 + x = -1.05 + 14.45 x = -1.05 + 14.45 Combine like terms: -1.05 + 14.45 = 13.4 x = 13.4 Simplifying x = 13.4

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.5, 13.4}

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