(2x-5)x+2=49

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Solution for (2x-5)x+2=49 equation:


Simplifying
(2x + -5) * x + 2 = 49

Reorder the terms:
(-5 + 2x) * x + 2 = 49

Reorder the terms for easier multiplication:
x(-5 + 2x) + 2 = 49
(-5 * x + 2x * x) + 2 = 49
(-5x + 2x2) + 2 = 49

Reorder the terms:
2 + -5x + 2x2 = 49

Solving
2 + -5x + 2x2 = 49

Solving for variable 'x'.

Reorder the terms:
2 + -49 + -5x + 2x2 = 49 + -49

Combine like terms: 2 + -49 = -47
-47 + -5x + 2x2 = 49 + -49

Combine like terms: 49 + -49 = 0
-47 + -5x + 2x2 = 0

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

Divide each side by '2'.
-23.5 + -2.5x + x2 = 0

Move the constant term to the right:

Add '23.5' to each side of the equation.
-23.5 + -2.5x + 23.5 + x2 = 0 + 23.5

Reorder the terms:
-23.5 + 23.5 + -2.5x + x2 = 0 + 23.5

Combine like terms: -23.5 + 23.5 = 0.0
0.0 + -2.5x + x2 = 0 + 23.5
-2.5x + x2 = 0 + 23.5

Combine like terms: 0 + 23.5 = 23.5
-2.5x + x2 = 23.5

The x term is -2.5x.  Take half its coefficient (-1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
-2.5x + 1.5625 + x2 = 23.5 + 1.5625

Reorder the terms:
1.5625 + -2.5x + x2 = 23.5 + 1.5625

Combine like terms: 23.5 + 1.5625 = 25.0625
1.5625 + -2.5x + x2 = 25.0625

Factor a perfect square on the left side:
(x + -1.25)(x + -1.25) = 25.0625

Calculate the square root of the right side: 5.006246099

Break this problem into two subproblems by setting 
(x + -1.25) equal to 5.006246099 and -5.006246099.

Subproblem 1

x + -1.25 = 5.006246099 Simplifying x + -1.25 = 5.006246099 Reorder the terms: -1.25 + x = 5.006246099 Solving -1.25 + x = 5.006246099 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x = 5.006246099 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = 5.006246099 + 1.25 x = 5.006246099 + 1.25 Combine like terms: 5.006246099 + 1.25 = 6.256246099 x = 6.256246099 Simplifying x = 6.256246099

Subproblem 2

x + -1.25 = -5.006246099 Simplifying x + -1.25 = -5.006246099 Reorder the terms: -1.25 + x = -5.006246099 Solving -1.25 + x = -5.006246099 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x = -5.006246099 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = -5.006246099 + 1.25 x = -5.006246099 + 1.25 Combine like terms: -5.006246099 + 1.25 = -3.756246099 x = -3.756246099 Simplifying x = -3.756246099

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.256246099, -3.756246099}

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