(-7x+3)+(x^2+x-9)=

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Solution for (-7x+3)+(x^2+x-9)= equation:


Simplifying
(-7x + 3) + (x2 + x + -9) = 0

Reorder the terms:
(3 + -7x) + (x2 + x + -9) = 0

Remove parenthesis around (3 + -7x)
3 + -7x + (x2 + x + -9) = 0

Reorder the terms:
3 + -7x + (-9 + x + x2) = 0

Remove parenthesis around (-9 + x + x2)
3 + -7x + -9 + x + x2 = 0

Reorder the terms:
3 + -9 + -7x + x + x2 = 0

Combine like terms: 3 + -9 = -6
-6 + -7x + x + x2 = 0

Combine like terms: -7x + x = -6x
-6 + -6x + x2 = 0

Solving
-6 + -6x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '6' to each side of the equation.
-6 + -6x + 6 + x2 = 0 + 6

Reorder the terms:
-6 + 6 + -6x + x2 = 0 + 6

Combine like terms: -6 + 6 = 0
0 + -6x + x2 = 0 + 6
-6x + x2 = 0 + 6

Combine like terms: 0 + 6 = 6
-6x + x2 = 6

The x term is -6x.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6x + 9 + x2 = 6 + 9

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

Combine like terms: 6 + 9 = 15
9 + -6x + x2 = 15

Factor a perfect square on the left side:
(x + -3)(x + -3) = 15

Calculate the square root of the right side: 3.872983346

Break this problem into two subproblems by setting 
(x + -3) equal to 3.872983346 and -3.872983346.

Subproblem 1

x + -3 = 3.872983346 Simplifying x + -3 = 3.872983346 Reorder the terms: -3 + x = 3.872983346 Solving -3 + x = 3.872983346 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 3.872983346 + 3 Combine like terms: -3 + 3 = 0 0 + x = 3.872983346 + 3 x = 3.872983346 + 3 Combine like terms: 3.872983346 + 3 = 6.872983346 x = 6.872983346 Simplifying x = 6.872983346

Subproblem 2

x + -3 = -3.872983346 Simplifying x + -3 = -3.872983346 Reorder the terms: -3 + x = -3.872983346 Solving -3 + x = -3.872983346 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = -3.872983346 + 3 Combine like terms: -3 + 3 = 0 0 + x = -3.872983346 + 3 x = -3.872983346 + 3 Combine like terms: -3.872983346 + 3 = -0.872983346 x = -0.872983346 Simplifying x = -0.872983346

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.872983346, -0.872983346}

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