.25x^2+.5x+.25-4x+11=0

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Solution for .25x^2+.5x+.25-4x+11=0 equation:


Simplifying
0.25x2 + 0.5x + 0.25 + -4x + 11 = 0

Reorder the terms:
0.25 + 11 + 0.5x + -4x + 0.25x2 = 0

Combine like terms: 0.25 + 11 = 11.25
11.25 + 0.5x + -4x + 0.25x2 = 0

Combine like terms: 0.5x + -4x = -3.5x
11.25 + -3.5x + 0.25x2 = 0

Solving
11.25 + -3.5x + 0.25x2 = 0

Solving for variable 'x'.

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

Divide each side by '0.25'.
45 + -14x + x2 = 0

Move the constant term to the right:

Add '-45' to each side of the equation.
45 + -14x + -45 + x2 = 0 + -45

Reorder the terms:
45 + -45 + -14x + x2 = 0 + -45

Combine like terms: 45 + -45 = 0
0 + -14x + x2 = 0 + -45
-14x + x2 = 0 + -45

Combine like terms: 0 + -45 = -45
-14x + x2 = -45

The x term is -14x.  Take half its coefficient (-7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
-14x + 49 + x2 = -45 + 49

Reorder the terms:
49 + -14x + x2 = -45 + 49

Combine like terms: -45 + 49 = 4
49 + -14x + x2 = 4

Factor a perfect square on the left side:
(x + -7)(x + -7) = 4

Calculate the square root of the right side: 2

Break this problem into two subproblems by setting 
(x + -7) equal to 2 and -2.

Subproblem 1

x + -7 = 2 Simplifying x + -7 = 2 Reorder the terms: -7 + x = 2 Solving -7 + x = 2 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = 2 + 7 Combine like terms: -7 + 7 = 0 0 + x = 2 + 7 x = 2 + 7 Combine like terms: 2 + 7 = 9 x = 9 Simplifying x = 9

Subproblem 2

x + -7 = -2 Simplifying x + -7 = -2 Reorder the terms: -7 + x = -2 Solving -7 + x = -2 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = -2 + 7 Combine like terms: -7 + 7 = 0 0 + x = -2 + 7 x = -2 + 7 Combine like terms: -2 + 7 = 5 x = 5 Simplifying x = 5

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9, 5}

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