2x^2-15x+800=

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Solution for 2x^2-15x+800= equation:


Simplifying
2x2 + -15x + 800 = 0

Reorder the terms:
800 + -15x + 2x2 = 0

Solving
800 + -15x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
400 + -7.5x + x2 = 0

Move the constant term to the right:

Add '-400' to each side of the equation.
400 + -7.5x + -400 + x2 = 0 + -400

Reorder the terms:
400 + -400 + -7.5x + x2 = 0 + -400

Combine like terms: 400 + -400 = 0
0 + -7.5x + x2 = 0 + -400
-7.5x + x2 = 0 + -400

Combine like terms: 0 + -400 = -400
-7.5x + x2 = -400

The x term is -7.5x.  Take half its coefficient (-3.75).
Square it (14.0625) and add it to both sides.

Add '14.0625' to each side of the equation.
-7.5x + 14.0625 + x2 = -400 + 14.0625

Reorder the terms:
14.0625 + -7.5x + x2 = -400 + 14.0625

Combine like terms: -400 + 14.0625 = -385.9375
14.0625 + -7.5x + x2 = -385.9375

Factor a perfect square on the left side:
(x + -3.75)(x + -3.75) = -385.9375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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