9x+6-3x^2+3=2x+2

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Solution for 9x+6-3x^2+3=2x+2 equation:


Simplifying
9x + 6 + -3x2 + 3 = 2x + 2

Reorder the terms:
6 + 3 + 9x + -3x2 = 2x + 2

Combine like terms: 6 + 3 = 9
9 + 9x + -3x2 = 2x + 2

Reorder the terms:
9 + 9x + -3x2 = 2 + 2x

Solving
9 + 9x + -3x2 = 2 + 2x

Solving for variable 'x'.

Reorder the terms:
9 + -2 + 9x + -2x + -3x2 = 2 + 2x + -2 + -2x

Combine like terms: 9 + -2 = 7
7 + 9x + -2x + -3x2 = 2 + 2x + -2 + -2x

Combine like terms: 9x + -2x = 7x
7 + 7x + -3x2 = 2 + 2x + -2 + -2x

Reorder the terms:
7 + 7x + -3x2 = 2 + -2 + 2x + -2x

Combine like terms: 2 + -2 = 0
7 + 7x + -3x2 = 0 + 2x + -2x
7 + 7x + -3x2 = 2x + -2x

Combine like terms: 2x + -2x = 0
7 + 7x + -3x2 = 0

Begin completing the square.  Divide all terms by
-3 the coefficient of the squared term: 

Divide each side by '-3'.
-2.333333333 + -2.333333333x + x2 = 0

Move the constant term to the right:

Add '2.333333333' to each side of the equation.
-2.333333333 + -2.333333333x + 2.333333333 + x2 = 0 + 2.333333333

Reorder the terms:
-2.333333333 + 2.333333333 + -2.333333333x + x2 = 0 + 2.333333333

Combine like terms: -2.333333333 + 2.333333333 = 0.000000000
0.000000000 + -2.333333333x + x2 = 0 + 2.333333333
-2.333333333x + x2 = 0 + 2.333333333

Combine like terms: 0 + 2.333333333 = 2.333333333
-2.333333333x + x2 = 2.333333333

The x term is -2.333333333x.  Take half its coefficient (-1.166666667).
Square it (1.361111112) and add it to both sides.

Add '1.361111112' to each side of the equation.
-2.333333333x + 1.361111112 + x2 = 2.333333333 + 1.361111112

Reorder the terms:
1.361111112 + -2.333333333x + x2 = 2.333333333 + 1.361111112

Combine like terms: 2.333333333 + 1.361111112 = 3.694444445
1.361111112 + -2.333333333x + x2 = 3.694444445

Factor a perfect square on the left side:
(x + -1.166666667)(x + -1.166666667) = 3.694444445

Calculate the square root of the right side: 1.922093766

Break this problem into two subproblems by setting 
(x + -1.166666667) equal to 1.922093766 and -1.922093766.

Subproblem 1

x + -1.166666667 = 1.922093766 Simplifying x + -1.166666667 = 1.922093766 Reorder the terms: -1.166666667 + x = 1.922093766 Solving -1.166666667 + x = 1.922093766 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.166666667' to each side of the equation. -1.166666667 + 1.166666667 + x = 1.922093766 + 1.166666667 Combine like terms: -1.166666667 + 1.166666667 = 0.000000000 0.000000000 + x = 1.922093766 + 1.166666667 x = 1.922093766 + 1.166666667 Combine like terms: 1.922093766 + 1.166666667 = 3.088760433 x = 3.088760433 Simplifying x = 3.088760433

Subproblem 2

x + -1.166666667 = -1.922093766 Simplifying x + -1.166666667 = -1.922093766 Reorder the terms: -1.166666667 + x = -1.922093766 Solving -1.166666667 + x = -1.922093766 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.166666667' to each side of the equation. -1.166666667 + 1.166666667 + x = -1.922093766 + 1.166666667 Combine like terms: -1.166666667 + 1.166666667 = 0.000000000 0.000000000 + x = -1.922093766 + 1.166666667 x = -1.922093766 + 1.166666667 Combine like terms: -1.922093766 + 1.166666667 = -0.755427099 x = -0.755427099 Simplifying x = -0.755427099

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.088760433, -0.755427099}

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