-9=2x^2-x^2+x

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Solution for -9=2x^2-x^2+x equation:


Simplifying
-9 = 2x2 + -1x2 + x

Reorder the terms:
-9 = x + 2x2 + -1x2

Combine like terms: 2x2 + -1x2 = 1x2
-9 = x + 1x2

Solving
-9 = x + 1x2

Solving for variable 'x'.

Reorder the terms:
-9 + -1x + -1x2 = x + -1x + 1x2 + -1x2

Combine like terms: x + -1x = 0
-9 + -1x + -1x2 = 0 + 1x2 + -1x2
-9 + -1x + -1x2 = 1x2 + -1x2

Combine like terms: 1x2 + -1x2 = 0
-9 + -1x + -1x2 = 0

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

Ignore the factor -1.

Subproblem 1

Set the factor '(9 + x + x2)' equal to zero and attempt to solve: Simplifying 9 + x + x2 = 0 Solving 9 + x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-9' to each side of the equation. 9 + x + -9 + x2 = 0 + -9 Reorder the terms: 9 + -9 + x + x2 = 0 + -9 Combine like terms: 9 + -9 = 0 0 + x + x2 = 0 + -9 x + x2 = 0 + -9 Combine like terms: 0 + -9 = -9 x + x2 = -9 The x term is x. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. x + 0.25 + x2 = -9 + 0.25 Reorder the terms: 0.25 + x + x2 = -9 + 0.25 Combine like terms: -9 + 0.25 = -8.75 0.25 + x + x2 = -8.75 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = -8.75 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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