2x^2-3x+4=10x+8

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Solution for 2x^2-3x+4=10x+8 equation:


Simplifying
2x2 + -3x + 4 = 10x + 8

Reorder the terms:
4 + -3x + 2x2 = 10x + 8

Reorder the terms:
4 + -3x + 2x2 = 8 + 10x

Solving
4 + -3x + 2x2 = 8 + 10x

Solving for variable 'x'.

Reorder the terms:
4 + -8 + -3x + -10x + 2x2 = 8 + 10x + -8 + -10x

Combine like terms: 4 + -8 = -4
-4 + -3x + -10x + 2x2 = 8 + 10x + -8 + -10x

Combine like terms: -3x + -10x = -13x
-4 + -13x + 2x2 = 8 + 10x + -8 + -10x

Reorder the terms:
-4 + -13x + 2x2 = 8 + -8 + 10x + -10x

Combine like terms: 8 + -8 = 0
-4 + -13x + 2x2 = 0 + 10x + -10x
-4 + -13x + 2x2 = 10x + -10x

Combine like terms: 10x + -10x = 0
-4 + -13x + 2x2 = 0

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

Divide each side by '2'.
-2 + -6.5x + x2 = 0

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + -6.5x + 2 + x2 = 0 + 2

Reorder the terms:
-2 + 2 + -6.5x + x2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + -6.5x + x2 = 0 + 2
-6.5x + x2 = 0 + 2

Combine like terms: 0 + 2 = 2
-6.5x + x2 = 2

The x term is -6.5x.  Take half its coefficient (-3.25).
Square it (10.5625) and add it to both sides.

Add '10.5625' to each side of the equation.
-6.5x + 10.5625 + x2 = 2 + 10.5625

Reorder the terms:
10.5625 + -6.5x + x2 = 2 + 10.5625

Combine like terms: 2 + 10.5625 = 12.5625
10.5625 + -6.5x + x2 = 12.5625

Factor a perfect square on the left side:
(x + -3.25)(x + -3.25) = 12.5625

Calculate the square root of the right side: 3.54436172

Break this problem into two subproblems by setting 
(x + -3.25) equal to 3.54436172 and -3.54436172.

Subproblem 1

x + -3.25 = 3.54436172 Simplifying x + -3.25 = 3.54436172 Reorder the terms: -3.25 + x = 3.54436172 Solving -3.25 + x = 3.54436172 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.25' to each side of the equation. -3.25 + 3.25 + x = 3.54436172 + 3.25 Combine like terms: -3.25 + 3.25 = 0.00 0.00 + x = 3.54436172 + 3.25 x = 3.54436172 + 3.25 Combine like terms: 3.54436172 + 3.25 = 6.79436172 x = 6.79436172 Simplifying x = 6.79436172

Subproblem 2

x + -3.25 = -3.54436172 Simplifying x + -3.25 = -3.54436172 Reorder the terms: -3.25 + x = -3.54436172 Solving -3.25 + x = -3.54436172 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.25' to each side of the equation. -3.25 + 3.25 + x = -3.54436172 + 3.25 Combine like terms: -3.25 + 3.25 = 0.00 0.00 + x = -3.54436172 + 3.25 x = -3.54436172 + 3.25 Combine like terms: -3.54436172 + 3.25 = -0.29436172 x = -0.29436172 Simplifying x = -0.29436172

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.79436172, -0.29436172}

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