0.5x^2-7x+12=0

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Solution for 0.5x^2-7x+12=0 equation:


Simplifying
0.5x2 + -7x + 12 = 0

Reorder the terms:
12 + -7x + 0.5x2 = 0

Solving
12 + -7x + 0.5x2 = 0

Solving for variable 'x'.

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

Divide each side by '0.5'.
24 + -14x + x2 = 0

Move the constant term to the right:

Add '-24' to each side of the equation.
24 + -14x + -24 + x2 = 0 + -24

Reorder the terms:
24 + -24 + -14x + x2 = 0 + -24

Combine like terms: 24 + -24 = 0
0 + -14x + x2 = 0 + -24
-14x + x2 = 0 + -24

Combine like terms: 0 + -24 = -24
-14x + x2 = -24

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 = -24 + 49

Reorder the terms:
49 + -14x + x2 = -24 + 49

Combine like terms: -24 + 49 = 25
49 + -14x + x2 = 25

Factor a perfect square on the left side:
(x + -7)(x + -7) = 25

Calculate the square root of the right side: 5

Break this problem into two subproblems by setting 
(x + -7) equal to 5 and -5.

Subproblem 1

x + -7 = 5 Simplifying x + -7 = 5 Reorder the terms: -7 + x = 5 Solving -7 + x = 5 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 = 5 + 7 Combine like terms: -7 + 7 = 0 0 + x = 5 + 7 x = 5 + 7 Combine like terms: 5 + 7 = 12 x = 12 Simplifying x = 12

Subproblem 2

x + -7 = -5 Simplifying x + -7 = -5 Reorder the terms: -7 + x = -5 Solving -7 + x = -5 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 = -5 + 7 Combine like terms: -7 + 7 = 0 0 + x = -5 + 7 x = -5 + 7 Combine like terms: -5 + 7 = 2 x = 2 Simplifying x = 2

Solution

The solution to the problem is based on the solutions from the subproblems. x = {12, 2}

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