11x^2+4-7x-9x^2-13x=

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Solution for 11x^2+4-7x-9x^2-13x= equation:


Simplifying
11x2 + 4 + -7x + -9x2 + -13x = 0

Reorder the terms:
4 + -7x + -13x + 11x2 + -9x2 = 0

Combine like terms: -7x + -13x = -20x
4 + -20x + 11x2 + -9x2 = 0

Combine like terms: 11x2 + -9x2 = 2x2
4 + -20x + 2x2 = 0

Solving
4 + -20x + 2x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(2 + -10x + x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(2 + -10x + x2)' equal to zero and attempt to solve: Simplifying 2 + -10x + x2 = 0 Solving 2 + -10x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-2' to each side of the equation. 2 + -10x + -2 + x2 = 0 + -2 Reorder the terms: 2 + -2 + -10x + x2 = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -10x + x2 = 0 + -2 -10x + x2 = 0 + -2 Combine like terms: 0 + -2 = -2 -10x + x2 = -2 The x term is -10x. Take half its coefficient (-5). Square it (25) and add it to both sides. Add '25' to each side of the equation. -10x + 25 + x2 = -2 + 25 Reorder the terms: 25 + -10x + x2 = -2 + 25 Combine like terms: -2 + 25 = 23 25 + -10x + x2 = 23 Factor a perfect square on the left side: (x + -5)(x + -5) = 23 Calculate the square root of the right side: 4.795831523 Break this problem into two subproblems by setting (x + -5) equal to 4.795831523 and -4.795831523.

Subproblem 1

x + -5 = 4.795831523 Simplifying x + -5 = 4.795831523 Reorder the terms: -5 + x = 4.795831523 Solving -5 + x = 4.795831523 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = 4.795831523 + 5 Combine like terms: -5 + 5 = 0 0 + x = 4.795831523 + 5 x = 4.795831523 + 5 Combine like terms: 4.795831523 + 5 = 9.795831523 x = 9.795831523 Simplifying x = 9.795831523

Subproblem 2

x + -5 = -4.795831523 Simplifying x + -5 = -4.795831523 Reorder the terms: -5 + x = -4.795831523 Solving -5 + x = -4.795831523 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = -4.795831523 + 5 Combine like terms: -5 + 5 = 0 0 + x = -4.795831523 + 5 x = -4.795831523 + 5 Combine like terms: -4.795831523 + 5 = 0.204168477 x = 0.204168477 Simplifying x = 0.204168477

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.795831523, 0.204168477}

Solution

x = {9.795831523, 0.204168477}

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