2x^2+3=11x+2

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Solution for 2x^2+3=11x+2 equation:


Simplifying
2x2 + 3 = 11x + 2

Reorder the terms:
3 + 2x2 = 11x + 2

Reorder the terms:
3 + 2x2 = 2 + 11x

Solving
3 + 2x2 = 2 + 11x

Solving for variable 'x'.

Reorder the terms:
3 + -2 + -11x + 2x2 = 2 + 11x + -2 + -11x

Combine like terms: 3 + -2 = 1
1 + -11x + 2x2 = 2 + 11x + -2 + -11x

Reorder the terms:
1 + -11x + 2x2 = 2 + -2 + 11x + -11x

Combine like terms: 2 + -2 = 0
1 + -11x + 2x2 = 0 + 11x + -11x
1 + -11x + 2x2 = 11x + -11x

Combine like terms: 11x + -11x = 0
1 + -11x + 2x2 = 0

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

Divide each side by '2'.
0.5 + -5.5x + x2 = 0

Move the constant term to the right:

Add '-0.5' to each side of the equation.
0.5 + -5.5x + -0.5 + x2 = 0 + -0.5

Reorder the terms:
0.5 + -0.5 + -5.5x + x2 = 0 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + -5.5x + x2 = 0 + -0.5
-5.5x + x2 = 0 + -0.5

Combine like terms: 0 + -0.5 = -0.5
-5.5x + x2 = -0.5

The x term is -5.5x.  Take half its coefficient (-2.75).
Square it (7.5625) and add it to both sides.

Add '7.5625' to each side of the equation.
-5.5x + 7.5625 + x2 = -0.5 + 7.5625

Reorder the terms:
7.5625 + -5.5x + x2 = -0.5 + 7.5625

Combine like terms: -0.5 + 7.5625 = 7.0625
7.5625 + -5.5x + x2 = 7.0625

Factor a perfect square on the left side:
(x + -2.75)(x + -2.75) = 7.0625

Calculate the square root of the right side: 2.657536453

Break this problem into two subproblems by setting 
(x + -2.75) equal to 2.657536453 and -2.657536453.

Subproblem 1

x + -2.75 = 2.657536453 Simplifying x + -2.75 = 2.657536453 Reorder the terms: -2.75 + x = 2.657536453 Solving -2.75 + x = 2.657536453 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + x = 2.657536453 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + x = 2.657536453 + 2.75 x = 2.657536453 + 2.75 Combine like terms: 2.657536453 + 2.75 = 5.407536453 x = 5.407536453 Simplifying x = 5.407536453

Subproblem 2

x + -2.75 = -2.657536453 Simplifying x + -2.75 = -2.657536453 Reorder the terms: -2.75 + x = -2.657536453 Solving -2.75 + x = -2.657536453 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + x = -2.657536453 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + x = -2.657536453 + 2.75 x = -2.657536453 + 2.75 Combine like terms: -2.657536453 + 2.75 = 0.092463547 x = 0.092463547 Simplifying x = 0.092463547

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.407536453, 0.092463547}

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