6x^2-11x+3-9x-7x^2=

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Solution for 6x^2-11x+3-9x-7x^2= equation:


Simplifying
6x2 + -11x + 3 + -9x + -7x2 = 0

Reorder the terms:
3 + -11x + -9x + 6x2 + -7x2 = 0

Combine like terms: -11x + -9x = -20x
3 + -20x + 6x2 + -7x2 = 0

Combine like terms: 6x2 + -7x2 = -1x2
3 + -20x + -1x2 = 0

Solving
3 + -20x + -1x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-3 + 20x + x2 = 0

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + 20x + 3 + x2 = 0 + 3

Reorder the terms:
-3 + 3 + 20x + x2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 20x + x2 = 0 + 3
20x + x2 = 0 + 3

Combine like terms: 0 + 3 = 3
20x + x2 = 3

The x term is 20x.  Take half its coefficient (10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
20x + 100 + x2 = 3 + 100

Reorder the terms:
100 + 20x + x2 = 3 + 100

Combine like terms: 3 + 100 = 103
100 + 20x + x2 = 103

Factor a perfect square on the left side:
(x + 10)(x + 10) = 103

Calculate the square root of the right side: 10.148891565

Break this problem into two subproblems by setting 
(x + 10) equal to 10.148891565 and -10.148891565.

Subproblem 1

x + 10 = 10.148891565 Simplifying x + 10 = 10.148891565 Reorder the terms: 10 + x = 10.148891565 Solving 10 + x = 10.148891565 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + x = 10.148891565 + -10 Combine like terms: 10 + -10 = 0 0 + x = 10.148891565 + -10 x = 10.148891565 + -10 Combine like terms: 10.148891565 + -10 = 0.148891565 x = 0.148891565 Simplifying x = 0.148891565

Subproblem 2

x + 10 = -10.148891565 Simplifying x + 10 = -10.148891565 Reorder the terms: 10 + x = -10.148891565 Solving 10 + x = -10.148891565 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + x = -10.148891565 + -10 Combine like terms: 10 + -10 = 0 0 + x = -10.148891565 + -10 x = -10.148891565 + -10 Combine like terms: -10.148891565 + -10 = -20.148891565 x = -20.148891565 Simplifying x = -20.148891565

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.148891565, -20.148891565}

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