x^2+13=3x

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Solution for x^2+13=3x equation:


Simplifying
x2 + 13 = 3x

Reorder the terms:
13 + x2 = 3x

Solving
13 + x2 = 3x

Solving for variable 'x'.

Reorder the terms:
13 + -3x + x2 = 3x + -3x

Combine like terms: 3x + -3x = 0
13 + -3x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-13' to each side of the equation.
13 + -3x + -13 + x2 = 0 + -13

Reorder the terms:
13 + -13 + -3x + x2 = 0 + -13

Combine like terms: 13 + -13 = 0
0 + -3x + x2 = 0 + -13
-3x + x2 = 0 + -13

Combine like terms: 0 + -13 = -13
-3x + x2 = -13

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 = -13 + 2.25

Reorder the terms:
2.25 + -3x + x2 = -13 + 2.25

Combine like terms: -13 + 2.25 = -10.75
2.25 + -3x + x2 = -10.75

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = -10.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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