0.7x^2-140x+7200=0

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Solution for 0.7x^2-140x+7200=0 equation:


Simplifying
0.7x2 + -140x + 7200 = 0

Reorder the terms:
7200 + -140x + 0.7x2 = 0

Solving
7200 + -140x + 0.7x2 = 0

Solving for variable 'x'.

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

Divide each side by '0.7'.
10285.71429 + -200x + x2 = 0

Move the constant term to the right:

Add '-10285.71429' to each side of the equation.
10285.71429 + -200x + -10285.71429 + x2 = 0 + -10285.71429

Reorder the terms:
10285.71429 + -10285.71429 + -200x + x2 = 0 + -10285.71429

Combine like terms: 10285.71429 + -10285.71429 = 0.00000
0.00000 + -200x + x2 = 0 + -10285.71429
-200x + x2 = 0 + -10285.71429

Combine like terms: 0 + -10285.71429 = -10285.71429
-200x + x2 = -10285.71429

The x term is -200x.  Take half its coefficient (-100).
Square it (10000) and add it to both sides.

Add '10000' to each side of the equation.
-200x + 10000 + x2 = -10285.71429 + 10000

Reorder the terms:
10000 + -200x + x2 = -10285.71429 + 10000

Combine like terms: -10285.71429 + 10000 = -285.71429
10000 + -200x + x2 = -285.71429

Factor a perfect square on the left side:
(x + -100)(x + -100) = -285.71429

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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