x^2-9x=3x-10

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Solution for x^2-9x=3x-10 equation:


Simplifying
x2 + -9x = 3x + -10

Reorder the terms:
-9x + x2 = 3x + -10

Reorder the terms:
-9x + x2 = -10 + 3x

Solving
-9x + x2 = -10 + 3x

Solving for variable 'x'.

Reorder the terms:
10 + -9x + -3x + x2 = -10 + 3x + 10 + -3x

Combine like terms: -9x + -3x = -12x
10 + -12x + x2 = -10 + 3x + 10 + -3x

Reorder the terms:
10 + -12x + x2 = -10 + 10 + 3x + -3x

Combine like terms: -10 + 10 = 0
10 + -12x + x2 = 0 + 3x + -3x
10 + -12x + x2 = 3x + -3x

Combine like terms: 3x + -3x = 0
10 + -12x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-10' to each side of the equation.
10 + -12x + -10 + x2 = 0 + -10

Reorder the terms:
10 + -10 + -12x + x2 = 0 + -10

Combine like terms: 10 + -10 = 0
0 + -12x + x2 = 0 + -10
-12x + x2 = 0 + -10

Combine like terms: 0 + -10 = -10
-12x + x2 = -10

The x term is -12x.  Take half its coefficient (-6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
-12x + 36 + x2 = -10 + 36

Reorder the terms:
36 + -12x + x2 = -10 + 36

Combine like terms: -10 + 36 = 26
36 + -12x + x2 = 26

Factor a perfect square on the left side:
(x + -6)(x + -6) = 26

Calculate the square root of the right side: 5.099019514

Break this problem into two subproblems by setting 
(x + -6) equal to 5.099019514 and -5.099019514.

Subproblem 1

x + -6 = 5.099019514 Simplifying x + -6 = 5.099019514 Reorder the terms: -6 + x = 5.099019514 Solving -6 + x = 5.099019514 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = 5.099019514 + 6 Combine like terms: -6 + 6 = 0 0 + x = 5.099019514 + 6 x = 5.099019514 + 6 Combine like terms: 5.099019514 + 6 = 11.099019514 x = 11.099019514 Simplifying x = 11.099019514

Subproblem 2

x + -6 = -5.099019514 Simplifying x + -6 = -5.099019514 Reorder the terms: -6 + x = -5.099019514 Solving -6 + x = -5.099019514 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = -5.099019514 + 6 Combine like terms: -6 + 6 = 0 0 + x = -5.099019514 + 6 x = -5.099019514 + 6 Combine like terms: -5.099019514 + 6 = 0.900980486 x = 0.900980486 Simplifying x = 0.900980486

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.099019514, 0.900980486}

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