x(3+x)-4(2x+3)=7049

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Solution for x(3+x)-4(2x+3)=7049 equation:


Simplifying
x(3 + x) + -4(2x + 3) = 7049
(3 * x + x * x) + -4(2x + 3) = 7049
(3x + x2) + -4(2x + 3) = 7049

Reorder the terms:
3x + x2 + -4(3 + 2x) = 7049
3x + x2 + (3 * -4 + 2x * -4) = 7049
3x + x2 + (-12 + -8x) = 7049

Reorder the terms:
-12 + 3x + -8x + x2 = 7049

Combine like terms: 3x + -8x = -5x
-12 + -5x + x2 = 7049

Solving
-12 + -5x + x2 = 7049

Solving for variable 'x'.

Reorder the terms:
-12 + -7049 + -5x + x2 = 7049 + -7049

Combine like terms: -12 + -7049 = -7061
-7061 + -5x + x2 = 7049 + -7049

Combine like terms: 7049 + -7049 = 0
-7061 + -5x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '7061' to each side of the equation.
-7061 + -5x + 7061 + x2 = 0 + 7061

Reorder the terms:
-7061 + 7061 + -5x + x2 = 0 + 7061

Combine like terms: -7061 + 7061 = 0
0 + -5x + x2 = 0 + 7061
-5x + x2 = 0 + 7061

Combine like terms: 0 + 7061 = 7061
-5x + x2 = 7061

The x term is -5x.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5x + 6.25 + x2 = 7061 + 6.25

Reorder the terms:
6.25 + -5x + x2 = 7061 + 6.25

Combine like terms: 7061 + 6.25 = 7067.25
6.25 + -5x + x2 = 7067.25

Factor a perfect square on the left side:
(x + -2.5)(x + -2.5) = 7067.25

Calculate the square root of the right side: 84.066937615

Break this problem into two subproblems by setting 
(x + -2.5) equal to 84.066937615 and -84.066937615.

Subproblem 1

x + -2.5 = 84.066937615 Simplifying x + -2.5 = 84.066937615 Reorder the terms: -2.5 + x = 84.066937615 Solving -2.5 + x = 84.066937615 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = 84.066937615 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = 84.066937615 + 2.5 x = 84.066937615 + 2.5 Combine like terms: 84.066937615 + 2.5 = 86.566937615 x = 86.566937615 Simplifying x = 86.566937615

Subproblem 2

x + -2.5 = -84.066937615 Simplifying x + -2.5 = -84.066937615 Reorder the terms: -2.5 + x = -84.066937615 Solving -2.5 + x = -84.066937615 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = -84.066937615 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = -84.066937615 + 2.5 x = -84.066937615 + 2.5 Combine like terms: -84.066937615 + 2.5 = -81.566937615 x = -81.566937615 Simplifying x = -81.566937615

Solution

The solution to the problem is based on the solutions from the subproblems. x = {86.566937615, -81.566937615}

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