x^2-3.5x+3=0

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Solution for x^2-3.5x+3=0 equation:


Simplifying
x2 + -3.5x + 3 = 0

Reorder the terms:
3 + -3.5x + x2 = 0

Solving
3 + -3.5x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-3' to each side of the equation.
3 + -3.5x + -3 + x2 = 0 + -3

Reorder the terms:
3 + -3 + -3.5x + x2 = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -3.5x + x2 = 0 + -3
-3.5x + x2 = 0 + -3

Combine like terms: 0 + -3 = -3
-3.5x + x2 = -3

The x term is -3.5x.  Take half its coefficient (-1.75).
Square it (3.0625) and add it to both sides.

Add '3.0625' to each side of the equation.
-3.5x + 3.0625 + x2 = -3 + 3.0625

Reorder the terms:
3.0625 + -3.5x + x2 = -3 + 3.0625

Combine like terms: -3 + 3.0625 = 0.0625
3.0625 + -3.5x + x2 = 0.0625

Factor a perfect square on the left side:
(x + -1.75)(x + -1.75) = 0.0625

Calculate the square root of the right side: 0.25

Break this problem into two subproblems by setting 
(x + -1.75) equal to 0.25 and -0.25.

Subproblem 1

x + -1.75 = 0.25 Simplifying x + -1.75 = 0.25 Reorder the terms: -1.75 + x = 0.25 Solving -1.75 + x = 0.25 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + x = 0.25 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + x = 0.25 + 1.75 x = 0.25 + 1.75 Combine like terms: 0.25 + 1.75 = 2 x = 2 Simplifying x = 2

Subproblem 2

x + -1.75 = -0.25 Simplifying x + -1.75 = -0.25 Reorder the terms: -1.75 + x = -0.25 Solving -1.75 + x = -0.25 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + x = -0.25 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + x = -0.25 + 1.75 x = -0.25 + 1.75 Combine like terms: -0.25 + 1.75 = 1.5 x = 1.5 Simplifying x = 1.5

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2, 1.5}

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