2.5x+15+0.5x(x+-4)=1.2x+2(0.9x+-6)

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Solution for 2.5x+15+0.5x(x+-4)=1.2x+2(0.9x+-6) equation:


Simplifying
2.5x + 15 + 0.5x(x + -4) = 1.2x + 2(0.9x + -6)

Reorder the terms:
2.5x + 15 + 0.5x(-4 + x) = 1.2x + 2(0.9x + -6)
2.5x + 15 + (-4 * 0.5x + x * 0.5x) = 1.2x + 2(0.9x + -6)
2.5x + 15 + (-2x + 0.5x2) = 1.2x + 2(0.9x + -6)

Reorder the terms:
15 + 2.5x + -2x + 0.5x2 = 1.2x + 2(0.9x + -6)

Combine like terms: 2.5x + -2x = 0.5x
15 + 0.5x + 0.5x2 = 1.2x + 2(0.9x + -6)

Reorder the terms:
15 + 0.5x + 0.5x2 = 1.2x + 2(-6 + 0.9x)
15 + 0.5x + 0.5x2 = 1.2x + (-6 * 2 + 0.9x * 2)
15 + 0.5x + 0.5x2 = 1.2x + (-12 + 1.8x)

Reorder the terms:
15 + 0.5x + 0.5x2 = -12 + 1.2x + 1.8x

Combine like terms: 1.2x + 1.8x = 3x
15 + 0.5x + 0.5x2 = -12 + 3x

Solving
15 + 0.5x + 0.5x2 = -12 + 3x

Solving for variable 'x'.

Reorder the terms:
15 + 12 + 0.5x + -3x + 0.5x2 = -12 + 3x + 12 + -3x

Combine like terms: 15 + 12 = 27
27 + 0.5x + -3x + 0.5x2 = -12 + 3x + 12 + -3x

Combine like terms: 0.5x + -3x = -2.5x
27 + -2.5x + 0.5x2 = -12 + 3x + 12 + -3x

Reorder the terms:
27 + -2.5x + 0.5x2 = -12 + 12 + 3x + -3x

Combine like terms: -12 + 12 = 0
27 + -2.5x + 0.5x2 = 0 + 3x + -3x
27 + -2.5x + 0.5x2 = 3x + -3x

Combine like terms: 3x + -3x = 0
27 + -2.5x + 0.5x2 = 0

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

Divide each side by '0.5'.
54 + -5x + x2 = 0

Move the constant term to the right:

Add '-54' to each side of the equation.
54 + -5x + -54 + x2 = 0 + -54

Reorder the terms:
54 + -54 + -5x + x2 = 0 + -54

Combine like terms: 54 + -54 = 0
0 + -5x + x2 = 0 + -54
-5x + x2 = 0 + -54

Combine like terms: 0 + -54 = -54
-5x + x2 = -54

The x term is -5x.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5x + 6.25 + x2 = -54 + 6.25

Reorder the terms:
6.25 + -5x + x2 = -54 + 6.25

Combine like terms: -54 + 6.25 = -47.75
6.25 + -5x + x2 = -47.75

Factor a perfect square on the left side:
(x + -2.5)(x + -2.5) = -47.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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