x^2+140x+1275=0

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Solution for x^2+140x+1275=0 equation:


Simplifying
x2 + 140x + 1275 = 0

Reorder the terms:
1275 + 140x + x2 = 0

Solving
1275 + 140x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-1275' to each side of the equation.
1275 + 140x + -1275 + x2 = 0 + -1275

Reorder the terms:
1275 + -1275 + 140x + x2 = 0 + -1275

Combine like terms: 1275 + -1275 = 0
0 + 140x + x2 = 0 + -1275
140x + x2 = 0 + -1275

Combine like terms: 0 + -1275 = -1275
140x + x2 = -1275

The x term is 140x.  Take half its coefficient (70).
Square it (4900) and add it to both sides.

Add '4900' to each side of the equation.
140x + 4900 + x2 = -1275 + 4900

Reorder the terms:
4900 + 140x + x2 = -1275 + 4900

Combine like terms: -1275 + 4900 = 3625
4900 + 140x + x2 = 3625

Factor a perfect square on the left side:
(x + 70)(x + 70) = 3625

Calculate the square root of the right side: 60.207972894

Break this problem into two subproblems by setting 
(x + 70) equal to 60.207972894 and -60.207972894.

Subproblem 1

x + 70 = 60.207972894 Simplifying x + 70 = 60.207972894 Reorder the terms: 70 + x = 60.207972894 Solving 70 + x = 60.207972894 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-70' to each side of the equation. 70 + -70 + x = 60.207972894 + -70 Combine like terms: 70 + -70 = 0 0 + x = 60.207972894 + -70 x = 60.207972894 + -70 Combine like terms: 60.207972894 + -70 = -9.792027106 x = -9.792027106 Simplifying x = -9.792027106

Subproblem 2

x + 70 = -60.207972894 Simplifying x + 70 = -60.207972894 Reorder the terms: 70 + x = -60.207972894 Solving 70 + x = -60.207972894 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-70' to each side of the equation. 70 + -70 + x = -60.207972894 + -70 Combine like terms: 70 + -70 = 0 0 + x = -60.207972894 + -70 x = -60.207972894 + -70 Combine like terms: -60.207972894 + -70 = -130.207972894 x = -130.207972894 Simplifying x = -130.207972894

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-9.792027106, -130.207972894}

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