150=-0.002x^2+0.3x

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Solution for 150=-0.002x^2+0.3x equation:


Simplifying
150 = -0.002x2 + 0.3x

Reorder the terms:
150 = 0.3x + -0.002x2

Solving
150 = 0.3x + -0.002x2

Solving for variable 'x'.

Reorder the terms:
150 + -0.3x + 0.002x2 = 0.3x + -0.3x + -0.002x2 + 0.002x2

Combine like terms: 0.3x + -0.3x = 0.0
150 + -0.3x + 0.002x2 = 0.0 + -0.002x2 + 0.002x2
150 + -0.3x + 0.002x2 = -0.002x2 + 0.002x2

Combine like terms: -0.002x2 + 0.002x2 = 0.000
150 + -0.3x + 0.002x2 = 0.000

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

Divide each side by '0.002'.
75000 + -150x + x2 = 0

Move the constant term to the right:

Add '-75000' to each side of the equation.
75000 + -150x + -75000 + x2 = 0 + -75000

Reorder the terms:
75000 + -75000 + -150x + x2 = 0 + -75000

Combine like terms: 75000 + -75000 = 0
0 + -150x + x2 = 0 + -75000
-150x + x2 = 0 + -75000

Combine like terms: 0 + -75000 = -75000
-150x + x2 = -75000

The x term is -150x.  Take half its coefficient (-75).
Square it (5625) and add it to both sides.

Add '5625' to each side of the equation.
-150x + 5625 + x2 = -75000 + 5625

Reorder the terms:
5625 + -150x + x2 = -75000 + 5625

Combine like terms: -75000 + 5625 = -69375
5625 + -150x + x2 = -69375

Factor a perfect square on the left side:
(x + -75)(x + -75) = -69375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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