4x^2+5x-176=0

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Solution for 4x^2+5x-176=0 equation:


Simplifying
4x2 + 5x + -176 = 0

Reorder the terms:
-176 + 5x + 4x2 = 0

Solving
-176 + 5x + 4x2 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
-44 + 1.25x + x2 = 0

Move the constant term to the right:

Add '44' to each side of the equation.
-44 + 1.25x + 44 + x2 = 0 + 44

Reorder the terms:
-44 + 44 + 1.25x + x2 = 0 + 44

Combine like terms: -44 + 44 = 0
0 + 1.25x + x2 = 0 + 44
1.25x + x2 = 0 + 44

Combine like terms: 0 + 44 = 44
1.25x + x2 = 44

The x term is 1.25x.  Take half its coefficient (0.625).
Square it (0.390625) and add it to both sides.

Add '0.390625' to each side of the equation.
1.25x + 0.390625 + x2 = 44 + 0.390625

Reorder the terms:
0.390625 + 1.25x + x2 = 44 + 0.390625

Combine like terms: 44 + 0.390625 = 44.390625
0.390625 + 1.25x + x2 = 44.390625

Factor a perfect square on the left side:
(x + 0.625)(x + 0.625) = 44.390625

Calculate the square root of the right side: 6.662628986

Break this problem into two subproblems by setting 
(x + 0.625) equal to 6.662628986 and -6.662628986.

Subproblem 1

x + 0.625 = 6.662628986 Simplifying x + 0.625 = 6.662628986 Reorder the terms: 0.625 + x = 6.662628986 Solving 0.625 + x = 6.662628986 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.625' to each side of the equation. 0.625 + -0.625 + x = 6.662628986 + -0.625 Combine like terms: 0.625 + -0.625 = 0.000 0.000 + x = 6.662628986 + -0.625 x = 6.662628986 + -0.625 Combine like terms: 6.662628986 + -0.625 = 6.037628986 x = 6.037628986 Simplifying x = 6.037628986

Subproblem 2

x + 0.625 = -6.662628986 Simplifying x + 0.625 = -6.662628986 Reorder the terms: 0.625 + x = -6.662628986 Solving 0.625 + x = -6.662628986 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.625' to each side of the equation. 0.625 + -0.625 + x = -6.662628986 + -0.625 Combine like terms: 0.625 + -0.625 = 0.000 0.000 + x = -6.662628986 + -0.625 x = -6.662628986 + -0.625 Combine like terms: -6.662628986 + -0.625 = -7.287628986 x = -7.287628986 Simplifying x = -7.287628986

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.037628986, -7.287628986}

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