(x^2+5x+3)-(3x^2-6x+4)=

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Solution for (x^2+5x+3)-(3x^2-6x+4)= equation:


Simplifying
(x2 + 5x + 3) + -1(3x2 + -6x + 4) = 0

Reorder the terms:
(3 + 5x + x2) + -1(3x2 + -6x + 4) = 0

Remove parenthesis around (3 + 5x + x2)
3 + 5x + x2 + -1(3x2 + -6x + 4) = 0

Reorder the terms:
3 + 5x + x2 + -1(4 + -6x + 3x2) = 0
3 + 5x + x2 + (4 * -1 + -6x * -1 + 3x2 * -1) = 0
3 + 5x + x2 + (-4 + 6x + -3x2) = 0

Reorder the terms:
3 + -4 + 5x + 6x + x2 + -3x2 = 0

Combine like terms: 3 + -4 = -1
-1 + 5x + 6x + x2 + -3x2 = 0

Combine like terms: 5x + 6x = 11x
-1 + 11x + x2 + -3x2 = 0

Combine like terms: x2 + -3x2 = -2x2
-1 + 11x + -2x2 = 0

Solving
-1 + 11x + -2x2 = 0

Solving for variable 'x'.

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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