19x^2-18x-18=10x^2-9

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Solution for 19x^2-18x-18=10x^2-9 equation:


Simplifying
19x2 + -18x + -18 = 10x2 + -9

Reorder the terms:
-18 + -18x + 19x2 = 10x2 + -9

Reorder the terms:
-18 + -18x + 19x2 = -9 + 10x2

Solving
-18 + -18x + 19x2 = -9 + 10x2

Solving for variable 'x'.

Reorder the terms:
-18 + 9 + -18x + 19x2 + -10x2 = -9 + 10x2 + 9 + -10x2

Combine like terms: -18 + 9 = -9
-9 + -18x + 19x2 + -10x2 = -9 + 10x2 + 9 + -10x2

Combine like terms: 19x2 + -10x2 = 9x2
-9 + -18x + 9x2 = -9 + 10x2 + 9 + -10x2

Reorder the terms:
-9 + -18x + 9x2 = -9 + 9 + 10x2 + -10x2

Combine like terms: -9 + 9 = 0
-9 + -18x + 9x2 = 0 + 10x2 + -10x2
-9 + -18x + 9x2 = 10x2 + -10x2

Combine like terms: 10x2 + -10x2 = 0
-9 + -18x + 9x2 = 0

Factor out the Greatest Common Factor (GCF), '9'.
9(-1 + -2x + x2) = 0

Ignore the factor 9.

Subproblem 1

Set the factor '(-1 + -2x + x2)' equal to zero and attempt to solve: Simplifying -1 + -2x + x2 = 0 Solving -1 + -2x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '1' to each side of the equation. -1 + -2x + 1 + x2 = 0 + 1 Reorder the terms: -1 + 1 + -2x + x2 = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -2x + x2 = 0 + 1 -2x + x2 = 0 + 1 Combine like terms: 0 + 1 = 1 -2x + x2 = 1 The x term is -2x. Take half its coefficient (-1). Square it (1) and add it to both sides. Add '1' to each side of the equation. -2x + 1 + x2 = 1 + 1 Reorder the terms: 1 + -2x + x2 = 1 + 1 Combine like terms: 1 + 1 = 2 1 + -2x + x2 = 2 Factor a perfect square on the left side: (x + -1)(x + -1) = 2 Calculate the square root of the right side: 1.414213562 Break this problem into two subproblems by setting (x + -1) equal to 1.414213562 and -1.414213562.

Subproblem 1

x + -1 = 1.414213562 Simplifying x + -1 = 1.414213562 Reorder the terms: -1 + x = 1.414213562 Solving -1 + x = 1.414213562 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 1.414213562 + 1 Combine like terms: -1 + 1 = 0 0 + x = 1.414213562 + 1 x = 1.414213562 + 1 Combine like terms: 1.414213562 + 1 = 2.414213562 x = 2.414213562 Simplifying x = 2.414213562

Subproblem 2

x + -1 = -1.414213562 Simplifying x + -1 = -1.414213562 Reorder the terms: -1 + x = -1.414213562 Solving -1 + x = -1.414213562 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -1.414213562 + 1 Combine like terms: -1 + 1 = 0 0 + x = -1.414213562 + 1 x = -1.414213562 + 1 Combine like terms: -1.414213562 + 1 = -0.414213562 x = -0.414213562 Simplifying x = -0.414213562

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.414213562, -0.414213562}

Solution

x = {2.414213562, -0.414213562}

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