X^2+9-2x^2+6=16

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Solution for X^2+9-2x^2+6=16 equation:


Simplifying
X2 + 9 + -2x2 + 6 = 16

Reorder the terms:
9 + 6 + X2 + -2x2 = 16

Combine like terms: 9 + 6 = 15
15 + X2 + -2x2 = 16

Solving
15 + X2 + -2x2 = 16

Solving for variable 'X'.

Move all terms containing X to the left, all other terms to the right.

Add '-15' to each side of the equation.
15 + X2 + -15 + -2x2 = 16 + -15

Reorder the terms:
15 + -15 + X2 + -2x2 = 16 + -15

Combine like terms: 15 + -15 = 0
0 + X2 + -2x2 = 16 + -15
X2 + -2x2 = 16 + -15

Combine like terms: 16 + -15 = 1
X2 + -2x2 = 1

Add '2x2' to each side of the equation.
X2 + -2x2 + 2x2 = 1 + 2x2

Combine like terms: -2x2 + 2x2 = 0
X2 + 0 = 1 + 2x2
X2 = 1 + 2x2

Simplifying
X2 = 1 + 2x2

Reorder the terms:
-1 + X2 + -2x2 = 1 + 2x2 + -1 + -2x2

Reorder the terms:
-1 + X2 + -2x2 = 1 + -1 + 2x2 + -2x2

Combine like terms: 1 + -1 = 0
-1 + X2 + -2x2 = 0 + 2x2 + -2x2
-1 + X2 + -2x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
-1 + X2 + -2x2 = 0

Factor a trinomial.
(X + -2x)(X + x) = 0

Subproblem 1

Set the factor '(X + -2x)' equal to zero and attempt to solve: Simplifying X + -2x = 0 Solving X + -2x = 0 Move all terms containing X to the left, all other terms to the right. Add '2x' to each side of the equation. X + -2x + 2x = 0 + 2x Combine like terms: -2x + 2x = 0 X + 0 = 0 + 2x X = 0 + 2x Remove the zero: X = 2x Simplifying X = 2x

Subproblem 2

Set the factor '(X + x)' equal to zero and attempt to solve: Simplifying X + x = 0 Solving X + x = 0 Move all terms containing X to the left, all other terms to the right. Add '-1x' to each side of the equation. X + x + -1x = 0 + -1x Combine like terms: x + -1x = 0 X + 0 = 0 + -1x X = 0 + -1x Remove the zero: X = -1x Simplifying X = -1x

Solution

X = {2x, -1x}

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