4=-.006x^2+2.5x+4

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Solution for 4=-.006x^2+2.5x+4 equation: 


Simplifying
4 = -0.006x2 + 2.5x + 4

Reorder the terms:
4 = 4 + 2.5x + -0.006x2

Add '-4' to each side of the equation.
4 + -4 = 4 + 2.5x + -4 + -0.006x2

Combine like terms: 4 + -4 = 0
0 = 4 + 2.5x + -4 + -0.006x2

Reorder the terms:
0 = 4 + -4 + 2.5x + -0.006x2

Combine like terms: 4 + -4 = 0
0 = 0 + 2.5x + -0.006x2
0 = 2.5x + -0.006x2

Solving
0 = 2.5x + -0.006x2

Solving for variable 'x'.
Remove the zero:
-2.5x + 0.006x2 = 2.5x + -0.006x2 + -2.5x + 0.006x2

Reorder the terms:
-2.5x + 0.006x2 = 2.5x + -2.5x + -0.006x2 + 0.006x2

Combine like terms: 2.5x + -2.5x = 0.0
-2.5x + 0.006x2 = 0.0 + -0.006x2 + 0.006x2
-2.5x + 0.006x2 = -0.006x2 + 0.006x2

Combine like terms: -0.006x2 + 0.006x2 = 0.000
-2.5x + 0.006x2 = 0.000

The solution to this equation could not be determined.

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