25x^2+56x+4=5

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Solution for 25x^2+56x+4=5 equation:


Simplifying
25x2 + 56x + 4 = 5

Reorder the terms:
4 + 56x + 25x2 = 5

Solving
4 + 56x + 25x2 = 5

Solving for variable 'x'.

Reorder the terms:
4 + -5 + 56x + 25x2 = 5 + -5

Combine like terms: 4 + -5 = -1
-1 + 56x + 25x2 = 5 + -5

Combine like terms: 5 + -5 = 0
-1 + 56x + 25x2 = 0

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

Divide each side by '25'.
-0.04 + 2.24x + x2 = 0

Move the constant term to the right:

Add '0.04' to each side of the equation.
-0.04 + 2.24x + 0.04 + x2 = 0 + 0.04

Reorder the terms:
-0.04 + 0.04 + 2.24x + x2 = 0 + 0.04

Combine like terms: -0.04 + 0.04 = 0.00
0.00 + 2.24x + x2 = 0 + 0.04
2.24x + x2 = 0 + 0.04

Combine like terms: 0 + 0.04 = 0.04
2.24x + x2 = 0.04

The x term is 2.24x.  Take half its coefficient (1.12).
Square it (1.2544) and add it to both sides.

Add '1.2544' to each side of the equation.
2.24x + 1.2544 + x2 = 0.04 + 1.2544

Reorder the terms:
1.2544 + 2.24x + x2 = 0.04 + 1.2544

Combine like terms: 0.04 + 1.2544 = 1.2944
1.2544 + 2.24x + x2 = 1.2944

Factor a perfect square on the left side:
(x + 1.12)(x + 1.12) = 1.2944

Calculate the square root of the right side: 1.137717012

Break this problem into two subproblems by setting 
(x + 1.12) equal to 1.137717012 and -1.137717012.

Subproblem 1

x + 1.12 = 1.137717012 Simplifying x + 1.12 = 1.137717012 Reorder the terms: 1.12 + x = 1.137717012 Solving 1.12 + x = 1.137717012 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.12' to each side of the equation. 1.12 + -1.12 + x = 1.137717012 + -1.12 Combine like terms: 1.12 + -1.12 = 0.00 0.00 + x = 1.137717012 + -1.12 x = 1.137717012 + -1.12 Combine like terms: 1.137717012 + -1.12 = 0.017717012 x = 0.017717012 Simplifying x = 0.017717012

Subproblem 2

x + 1.12 = -1.137717012 Simplifying x + 1.12 = -1.137717012 Reorder the terms: 1.12 + x = -1.137717012 Solving 1.12 + x = -1.137717012 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.12' to each side of the equation. 1.12 + -1.12 + x = -1.137717012 + -1.12 Combine like terms: 1.12 + -1.12 = 0.00 0.00 + x = -1.137717012 + -1.12 x = -1.137717012 + -1.12 Combine like terms: -1.137717012 + -1.12 = -2.257717012 x = -2.257717012 Simplifying x = -2.257717012

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.017717012, -2.257717012}

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