x*2-0.2x*4x-2400=0

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Solution for x*2-0.2x*4x-2400=0 equation:


Simplifying
x * 2 + -0.2x * 4x + -2400 = 0

Reorder the terms for easier multiplication:
2x + -0.2x * 4x + -2400 = 0

Reorder the terms for easier multiplication:
2x + -0.2 * 4x * x + -2400 = 0

Multiply -0.2 * 4
2x + -0.8x * x + -2400 = 0

Multiply x * x
2x + -0.8x2 + -2400 = 0

Reorder the terms:
-2400 + 2x + -0.8x2 = 0

Solving
-2400 + 2x + -0.8x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-0.8 the coefficient of the squared term: 

Divide each side by '-0.8'.
3000 + -2.5x + x2 = 0

Move the constant term to the right:

Add '-3000' to each side of the equation.
3000 + -2.5x + -3000 + x2 = 0 + -3000

Reorder the terms:
3000 + -3000 + -2.5x + x2 = 0 + -3000

Combine like terms: 3000 + -3000 = 0
0 + -2.5x + x2 = 0 + -3000
-2.5x + x2 = 0 + -3000

Combine like terms: 0 + -3000 = -3000
-2.5x + x2 = -3000

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 = -3000 + 1.5625

Reorder the terms:
1.5625 + -2.5x + x2 = -3000 + 1.5625

Combine like terms: -3000 + 1.5625 = -2998.4375
1.5625 + -2.5x + x2 = -2998.4375

Factor a perfect square on the left side:
(x + -1.25)(x + -1.25) = -2998.4375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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