7x^2+3x+3x+4=-3x+5

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Solution for 7x^2+3x+3x+4=-3x+5 equation:


Simplifying
7x2 + 3x + 3x + 4 = -3x + 5

Reorder the terms:
4 + 3x + 3x + 7x2 = -3x + 5

Combine like terms: 3x + 3x = 6x
4 + 6x + 7x2 = -3x + 5

Reorder the terms:
4 + 6x + 7x2 = 5 + -3x

Solving
4 + 6x + 7x2 = 5 + -3x

Solving for variable 'x'.

Reorder the terms:
4 + -5 + 6x + 3x + 7x2 = 5 + -3x + -5 + 3x

Combine like terms: 4 + -5 = -1
-1 + 6x + 3x + 7x2 = 5 + -3x + -5 + 3x

Combine like terms: 6x + 3x = 9x
-1 + 9x + 7x2 = 5 + -3x + -5 + 3x

Reorder the terms:
-1 + 9x + 7x2 = 5 + -5 + -3x + 3x

Combine like terms: 5 + -5 = 0
-1 + 9x + 7x2 = 0 + -3x + 3x
-1 + 9x + 7x2 = -3x + 3x

Combine like terms: -3x + 3x = 0
-1 + 9x + 7x2 = 0

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

Divide each side by '7'.
-0.1428571429 + 1.285714286x + x2 = 0

Move the constant term to the right:

Add '0.1428571429' to each side of the equation.
-0.1428571429 + 1.285714286x + 0.1428571429 + x2 = 0 + 0.1428571429

Reorder the terms:
-0.1428571429 + 0.1428571429 + 1.285714286x + x2 = 0 + 0.1428571429

Combine like terms: -0.1428571429 + 0.1428571429 = 0.0000000000
0.0000000000 + 1.285714286x + x2 = 0 + 0.1428571429
1.285714286x + x2 = 0 + 0.1428571429

Combine like terms: 0 + 0.1428571429 = 0.1428571429
1.285714286x + x2 = 0.1428571429

The x term is 1.285714286x.  Take half its coefficient (0.642857143).
Square it (0.4132653063) and add it to both sides.

Add '0.4132653063' to each side of the equation.
1.285714286x + 0.4132653063 + x2 = 0.1428571429 + 0.4132653063

Reorder the terms:
0.4132653063 + 1.285714286x + x2 = 0.1428571429 + 0.4132653063

Combine like terms: 0.1428571429 + 0.4132653063 = 0.5561224492
0.4132653063 + 1.285714286x + x2 = 0.5561224492

Factor a perfect square on the left side:
(x + 0.642857143)(x + 0.642857143) = 0.5561224492

Calculate the square root of the right side: 0.745736179

Break this problem into two subproblems by setting 
(x + 0.642857143) equal to 0.745736179 and -0.745736179.

Subproblem 1

x + 0.642857143 = 0.745736179 Simplifying x + 0.642857143 = 0.745736179 Reorder the terms: 0.642857143 + x = 0.745736179 Solving 0.642857143 + x = 0.745736179 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.642857143' to each side of the equation. 0.642857143 + -0.642857143 + x = 0.745736179 + -0.642857143 Combine like terms: 0.642857143 + -0.642857143 = 0.000000000 0.000000000 + x = 0.745736179 + -0.642857143 x = 0.745736179 + -0.642857143 Combine like terms: 0.745736179 + -0.642857143 = 0.102879036 x = 0.102879036 Simplifying x = 0.102879036

Subproblem 2

x + 0.642857143 = -0.745736179 Simplifying x + 0.642857143 = -0.745736179 Reorder the terms: 0.642857143 + x = -0.745736179 Solving 0.642857143 + x = -0.745736179 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.642857143' to each side of the equation. 0.642857143 + -0.642857143 + x = -0.745736179 + -0.642857143 Combine like terms: 0.642857143 + -0.642857143 = 0.000000000 0.000000000 + x = -0.745736179 + -0.642857143 x = -0.745736179 + -0.642857143 Combine like terms: -0.745736179 + -0.642857143 = -1.388593322 x = -1.388593322 Simplifying x = -1.388593322

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.102879036, -1.388593322}

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