0=x^2-4.75x+3

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Solution for 0=x^2-4.75x+3 equation:


Simplifying
0 = x2 + -4.75x + 3

Reorder the terms:
0 = 3 + -4.75x + x2

Solving
0 = 3 + -4.75x + x2

Solving for variable 'x'.

Combine like terms: 0 + -3 = -3
-3 + 4.75x + -1x2 = 3 + -4.75x + x2 + -3 + 4.75x + -1x2

Reorder the terms:
-3 + 4.75x + -1x2 = 3 + -3 + -4.75x + 4.75x + x2 + -1x2

Combine like terms: 3 + -3 = 0
-3 + 4.75x + -1x2 = 0 + -4.75x + 4.75x + x2 + -1x2
-3 + 4.75x + -1x2 = -4.75x + 4.75x + x2 + -1x2

Combine like terms: -4.75x + 4.75x = 0.00
-3 + 4.75x + -1x2 = 0.00 + x2 + -1x2
-3 + 4.75x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-3 + 4.75x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
3 + -4.75x + x2 = 0

Move the constant term to the right:

Add '-3' to each side of the equation.
3 + -4.75x + -3 + x2 = 0 + -3

Reorder the terms:
3 + -3 + -4.75x + x2 = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -4.75x + x2 = 0 + -3
-4.75x + x2 = 0 + -3

Combine like terms: 0 + -3 = -3
-4.75x + x2 = -3

The x term is -4.75x.  Take half its coefficient (-2.375).
Square it (5.640625) and add it to both sides.

Add '5.640625' to each side of the equation.
-4.75x + 5.640625 + x2 = -3 + 5.640625

Reorder the terms:
5.640625 + -4.75x + x2 = -3 + 5.640625

Combine like terms: -3 + 5.640625 = 2.640625
5.640625 + -4.75x + x2 = 2.640625

Factor a perfect square on the left side:
(x + -2.375)(x + -2.375) = 2.640625

Calculate the square root of the right side: 1.625

Break this problem into two subproblems by setting 
(x + -2.375) equal to 1.625 and -1.625.

Subproblem 1

x + -2.375 = 1.625 Simplifying x + -2.375 = 1.625 Reorder the terms: -2.375 + x = 1.625 Solving -2.375 + x = 1.625 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.375' to each side of the equation. -2.375 + 2.375 + x = 1.625 + 2.375 Combine like terms: -2.375 + 2.375 = 0.000 0.000 + x = 1.625 + 2.375 x = 1.625 + 2.375 Combine like terms: 1.625 + 2.375 = 4 x = 4 Simplifying x = 4

Subproblem 2

x + -2.375 = -1.625 Simplifying x + -2.375 = -1.625 Reorder the terms: -2.375 + x = -1.625 Solving -2.375 + x = -1.625 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.375' to each side of the equation. -2.375 + 2.375 + x = -1.625 + 2.375 Combine like terms: -2.375 + 2.375 = 0.000 0.000 + x = -1.625 + 2.375 x = -1.625 + 2.375 Combine like terms: -1.625 + 2.375 = 0.75 x = 0.75 Simplifying x = 0.75

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4, 0.75}

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