3x^2+5=x^2+5x

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Solution for 3x^2+5=x^2+5x equation:


Simplifying
3x2 + 5 = x2 + 5x

Reorder the terms:
5 + 3x2 = x2 + 5x

Reorder the terms:
5 + 3x2 = 5x + x2

Solving
5 + 3x2 = 5x + x2

Solving for variable 'x'.

Reorder the terms:
5 + -5x + 3x2 + -1x2 = 5x + x2 + -5x + -1x2

Combine like terms: 3x2 + -1x2 = 2x2
5 + -5x + 2x2 = 5x + x2 + -5x + -1x2

Reorder the terms:
5 + -5x + 2x2 = 5x + -5x + x2 + -1x2

Combine like terms: 5x + -5x = 0
5 + -5x + 2x2 = 0 + x2 + -1x2
5 + -5x + 2x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
5 + -5x + 2x2 = 0

Begin completing the square.  Divide all terms by
2 the coefficient of the squared term: 

Divide each side by '2'.
2.5 + -2.5x + x2 = 0

Move the constant term to the right:

Add '-2.5' to each side of the equation.
2.5 + -2.5x + -2.5 + x2 = 0 + -2.5

Reorder the terms:
2.5 + -2.5 + -2.5x + x2 = 0 + -2.5

Combine like terms: 2.5 + -2.5 = 0.0
0.0 + -2.5x + x2 = 0 + -2.5
-2.5x + x2 = 0 + -2.5

Combine like terms: 0 + -2.5 = -2.5
-2.5x + x2 = -2.5

The x term is -2.5x.  Take half its coefficient (-1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
-2.5x + 1.5625 + x2 = -2.5 + 1.5625

Reorder the terms:
1.5625 + -2.5x + x2 = -2.5 + 1.5625

Combine like terms: -2.5 + 1.5625 = -0.9375
1.5625 + -2.5x + x2 = -0.9375

Factor a perfect square on the left side:
(x + -1.25)(x + -1.25) = -0.9375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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