x+3=4x-x^2

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Solution for x+3=4x-x^2 equation:


Simplifying
x + 3 = 4x + -1x2

Reorder the terms:
3 + x = 4x + -1x2

Solving
3 + x = 4x + -1x2

Solving for variable 'x'.

Combine like terms: x + -4x = -3x
3 + -3x + x2 = 4x + -1x2 + -4x + x2

Reorder the terms:
3 + -3x + x2 = 4x + -4x + -1x2 + x2

Combine like terms: 4x + -4x = 0
3 + -3x + x2 = 0 + -1x2 + x2
3 + -3x + x2 = -1x2 + x2

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

Begin completing the square.

Move the constant term to the right:

Add '-3' to each side of the equation.
3 + -3x + -3 + x2 = 0 + -3

Reorder the terms:
3 + -3 + -3x + x2 = 0 + -3

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

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

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = -3 + 2.25

Reorder the terms:
2.25 + -3x + x2 = -3 + 2.25

Combine like terms: -3 + 2.25 = -0.75
2.25 + -3x + x2 = -0.75

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = -0.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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