0.25x^2-14x+16=0

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Solution for 0.25x^2-14x+16=0 equation:


Simplifying
0.25x2 + -14x + 16 = 0

Reorder the terms:
16 + -14x + 0.25x2 = 0

Solving
16 + -14x + 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'.
64 + -56x + x2 = 0

Move the constant term to the right:

Add '-64' to each side of the equation.
64 + -56x + -64 + x2 = 0 + -64

Reorder the terms:
64 + -64 + -56x + x2 = 0 + -64

Combine like terms: 64 + -64 = 0
0 + -56x + x2 = 0 + -64
-56x + x2 = 0 + -64

Combine like terms: 0 + -64 = -64
-56x + x2 = -64

The x term is -56x.  Take half its coefficient (-28).
Square it (784) and add it to both sides.

Add '784' to each side of the equation.
-56x + 784 + x2 = -64 + 784

Reorder the terms:
784 + -56x + x2 = -64 + 784

Combine like terms: -64 + 784 = 720
784 + -56x + x2 = 720

Factor a perfect square on the left side:
(x + -28)(x + -28) = 720

Calculate the square root of the right side: 26.83281573

Break this problem into two subproblems by setting 
(x + -28) equal to 26.83281573 and -26.83281573.

Subproblem 1

x + -28 = 26.83281573 Simplifying x + -28 = 26.83281573 Reorder the terms: -28 + x = 26.83281573 Solving -28 + x = 26.83281573 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '28' to each side of the equation. -28 + 28 + x = 26.83281573 + 28 Combine like terms: -28 + 28 = 0 0 + x = 26.83281573 + 28 x = 26.83281573 + 28 Combine like terms: 26.83281573 + 28 = 54.83281573 x = 54.83281573 Simplifying x = 54.83281573

Subproblem 2

x + -28 = -26.83281573 Simplifying x + -28 = -26.83281573 Reorder the terms: -28 + x = -26.83281573 Solving -28 + x = -26.83281573 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '28' to each side of the equation. -28 + 28 + x = -26.83281573 + 28 Combine like terms: -28 + 28 = 0 0 + x = -26.83281573 + 28 x = -26.83281573 + 28 Combine like terms: -26.83281573 + 28 = 1.16718427 x = 1.16718427 Simplifying x = 1.16718427

Solution

The solution to the problem is based on the solutions from the subproblems. x = {54.83281573, 1.16718427}

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