x^2+3x=(2-x^2)

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Solution for x^2+3x=(2-x^2) equation:


Simplifying
x2 + 3x = (2 + -1x2)

Reorder the terms:
3x + x2 = (2 + -1x2)

Remove parenthesis around (2 + -1x2)
3x + x2 = 2 + -1x2

Solving
3x + x2 = 2 + -1x2

Solving for variable 'x'.

Reorder the terms:
-2 + 3x + x2 + x2 = 2 + -1x2 + -2 + x2

Combine like terms: x2 + x2 = 2x2
-2 + 3x + 2x2 = 2 + -1x2 + -2 + x2

Reorder the terms:
-2 + 3x + 2x2 = 2 + -2 + -1x2 + x2

Combine like terms: 2 + -2 = 0
-2 + 3x + 2x2 = 0 + -1x2 + x2
-2 + 3x + 2x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
-2 + 3x + 2x2 = 0

Factor a trinomial.
(-2 + -1x)(1 + -2x) = 0

Subproblem 1

Set the factor '(-2 + -1x)' equal to zero and attempt to solve: Simplifying -2 + -1x = 0 Solving -2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -1x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1x = 0 + 2 -1x = 0 + 2 Combine like terms: 0 + 2 = 2 -1x = 2 Divide each side by '-1'. x = -2 Simplifying x = -2

Subproblem 2

Set the factor '(1 + -2x)' equal to zero and attempt to solve: Simplifying 1 + -2x = 0 Solving 1 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -2x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -2x = 0 + -1 -2x = 0 + -1 Combine like terms: 0 + -1 = -1 -2x = -1 Divide each side by '-2'. x = 0.5 Simplifying x = 0.5

Solution

x = {-2, 0.5}

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