4x^2+5x+2=175

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Solution for 4x^2+5x+2=175 equation:


Simplifying
4x2 + 5x + 2 = 175

Reorder the terms:
2 + 5x + 4x2 = 175

Solving
2 + 5x + 4x2 = 175

Solving for variable 'x'.

Reorder the terms:
2 + -175 + 5x + 4x2 = 175 + -175

Combine like terms: 2 + -175 = -173
-173 + 5x + 4x2 = 175 + -175

Combine like terms: 175 + -175 = 0
-173 + 5x + 4x2 = 0

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

Divide each side by '4'.
-43.25 + 1.25x + x2 = 0

Move the constant term to the right:

Add '43.25' to each side of the equation.
-43.25 + 1.25x + 43.25 + x2 = 0 + 43.25

Reorder the terms:
-43.25 + 43.25 + 1.25x + x2 = 0 + 43.25

Combine like terms: -43.25 + 43.25 = 0.00
0.00 + 1.25x + x2 = 0 + 43.25
1.25x + x2 = 0 + 43.25

Combine like terms: 0 + 43.25 = 43.25
1.25x + x2 = 43.25

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 = 43.25 + 0.390625

Reorder the terms:
0.390625 + 1.25x + x2 = 43.25 + 0.390625

Combine like terms: 43.25 + 0.390625 = 43.640625
0.390625 + 1.25x + x2 = 43.640625

Factor a perfect square on the left side:
(x + 0.625)(x + 0.625) = 43.640625

Calculate the square root of the right side: 6.606105131

Break this problem into two subproblems by setting 
(x + 0.625) equal to 6.606105131 and -6.606105131.

Subproblem 1

x + 0.625 = 6.606105131 Simplifying x + 0.625 = 6.606105131 Reorder the terms: 0.625 + x = 6.606105131 Solving 0.625 + x = 6.606105131 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 = 6.606105131 + -0.625 Combine like terms: 0.625 + -0.625 = 0.000 0.000 + x = 6.606105131 + -0.625 x = 6.606105131 + -0.625 Combine like terms: 6.606105131 + -0.625 = 5.981105131 x = 5.981105131 Simplifying x = 5.981105131

Subproblem 2

x + 0.625 = -6.606105131 Simplifying x + 0.625 = -6.606105131 Reorder the terms: 0.625 + x = -6.606105131 Solving 0.625 + x = -6.606105131 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 = -6.606105131 + -0.625 Combine like terms: 0.625 + -0.625 = 0.000 0.000 + x = -6.606105131 + -0.625 x = -6.606105131 + -0.625 Combine like terms: -6.606105131 + -0.625 = -7.231105131 x = -7.231105131 Simplifying x = -7.231105131

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.981105131, -7.231105131}

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