x^2+3.5x+3.0625=0

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Solution for x^2+3.5x+3.0625=0 equation:


Simplifying
x2 + 3.5x + 3.0625 = 0

Reorder the terms:
3.0625 + 3.5x + x2 = 0

Solving
3.0625 + 3.5x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-3.0625' to each side of the equation.
3.0625 + 3.5x + -3.0625 + x2 = 0 + -3.0625

Reorder the terms:
3.0625 + -3.0625 + 3.5x + x2 = 0 + -3.0625

Combine like terms: 3.0625 + -3.0625 = 0.0000
0.0000 + 3.5x + x2 = 0 + -3.0625
3.5x + x2 = 0 + -3.0625

Combine like terms: 0 + -3.0625 = -3.0625
3.5x + x2 = -3.0625

The x term is 3.5x.  Take half its coefficient (1.75).
Square it (3.0625) and add it to both sides.

Add '3.0625' to each side of the equation.
3.5x + 3.0625 + x2 = -3.0625 + 3.0625

Reorder the terms:
3.0625 + 3.5x + x2 = -3.0625 + 3.0625

Combine like terms: -3.0625 + 3.0625 = 0.0000
3.0625 + 3.5x + x2 = 0.0000

Factor a perfect square on the left side:
(x + 1.75)(x + 1.75) = 0.0000

Calculate the square root of the right side: 0.0000

Break this problem into two subproblems by setting 
(x + 1.75) equal to 0.0000 and 0.0000.

Subproblem 1

x + 1.75 = 0.0000 Simplifying x + 1.75 = 0.0000 Reorder the terms: 1.75 + x = 0.0000 Solving 1.75 + x = 0.0000 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + x = 0.0000 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + x = 0.0000 + -1.75 x = 0.0000 + -1.75 Combine like terms: 0.0000 + -1.75 = -1.75 x = -1.75 Simplifying x = -1.75

Subproblem 2

x + 1.75 = 0.0000 Simplifying x + 1.75 = 0.0000 Reorder the terms: 1.75 + x = 0.0000 Solving 1.75 + x = 0.0000 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + x = 0.0000 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + x = 0.0000 + -1.75 x = 0.0000 + -1.75 Combine like terms: 0.0000 + -1.75 = -1.75 x = -1.75 Simplifying x = -1.75

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.75, -1.75}

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