3x+2x^2+25=15x

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Solution for 3x+2x^2+25=15x equation:


Simplifying
3x + 2x2 + 25 = 15x

Reorder the terms:
25 + 3x + 2x2 = 15x

Solving
25 + 3x + 2x2 = 15x

Solving for variable 'x'.

Reorder the terms:
25 + 3x + -15x + 2x2 = 15x + -15x

Combine like terms: 3x + -15x = -12x
25 + -12x + 2x2 = 15x + -15x

Combine like terms: 15x + -15x = 0
25 + -12x + 2x2 = 0

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

Divide each side by '2'.
12.5 + -6x + x2 = 0

Move the constant term to the right:

Add '-12.5' to each side of the equation.
12.5 + -6x + -12.5 + x2 = 0 + -12.5

Reorder the terms:
12.5 + -12.5 + -6x + x2 = 0 + -12.5

Combine like terms: 12.5 + -12.5 = 0.0
0.0 + -6x + x2 = 0 + -12.5
-6x + x2 = 0 + -12.5

Combine like terms: 0 + -12.5 = -12.5
-6x + x2 = -12.5

The x term is -6x.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6x + 9 + x2 = -12.5 + 9

Reorder the terms:
9 + -6x + x2 = -12.5 + 9

Combine like terms: -12.5 + 9 = -3.5
9 + -6x + x2 = -3.5

Factor a perfect square on the left side:
(x + -3)(x + -3) = -3.5

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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