x^2+7x-175=0

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Solution for x^2+7x-175=0 equation:


Simplifying
x2 + 7x + -175 = 0

Reorder the terms:
-175 + 7x + x2 = 0

Solving
-175 + 7x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '175' to each side of the equation.
-175 + 7x + 175 + x2 = 0 + 175

Reorder the terms:
-175 + 175 + 7x + x2 = 0 + 175

Combine like terms: -175 + 175 = 0
0 + 7x + x2 = 0 + 175
7x + x2 = 0 + 175

Combine like terms: 0 + 175 = 175
7x + x2 = 175

The x term is 7x.  Take half its coefficient (3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
7x + 12.25 + x2 = 175 + 12.25

Reorder the terms:
12.25 + 7x + x2 = 175 + 12.25

Combine like terms: 175 + 12.25 = 187.25
12.25 + 7x + x2 = 187.25

Factor a perfect square on the left side:
(x + 3.5)(x + 3.5) = 187.25

Calculate the square root of the right side: 13.683932183

Break this problem into two subproblems by setting 
(x + 3.5) equal to 13.683932183 and -13.683932183.

Subproblem 1

x + 3.5 = 13.683932183 Simplifying x + 3.5 = 13.683932183 Reorder the terms: 3.5 + x = 13.683932183 Solving 3.5 + x = 13.683932183 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + x = 13.683932183 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + x = 13.683932183 + -3.5 x = 13.683932183 + -3.5 Combine like terms: 13.683932183 + -3.5 = 10.183932183 x = 10.183932183 Simplifying x = 10.183932183

Subproblem 2

x + 3.5 = -13.683932183 Simplifying x + 3.5 = -13.683932183 Reorder the terms: 3.5 + x = -13.683932183 Solving 3.5 + x = -13.683932183 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + x = -13.683932183 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + x = -13.683932183 + -3.5 x = -13.683932183 + -3.5 Combine like terms: -13.683932183 + -3.5 = -17.183932183 x = -17.183932183 Simplifying x = -17.183932183

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.183932183, -17.183932183}

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