100=-2.7x^2+30x+6.5

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Solution for 100=-2.7x^2+30x+6.5 equation:


Simplifying
100 = -2.7x2 + 30x + 6.5

Reorder the terms:
100 = 6.5 + 30x + -2.7x2

Solving
100 = 6.5 + 30x + -2.7x2

Solving for variable 'x'.

Combine like terms: 100 + -6.5 = 93.5
93.5 + -30x + 2.7x2 = 6.5 + 30x + -2.7x2 + -6.5 + -30x + 2.7x2

Reorder the terms:
93.5 + -30x + 2.7x2 = 6.5 + -6.5 + 30x + -30x + -2.7x2 + 2.7x2

Combine like terms: 6.5 + -6.5 = 0.0
93.5 + -30x + 2.7x2 = 0.0 + 30x + -30x + -2.7x2 + 2.7x2
93.5 + -30x + 2.7x2 = 30x + -30x + -2.7x2 + 2.7x2

Combine like terms: 30x + -30x = 0
93.5 + -30x + 2.7x2 = 0 + -2.7x2 + 2.7x2
93.5 + -30x + 2.7x2 = -2.7x2 + 2.7x2

Combine like terms: -2.7x2 + 2.7x2 = 0.0
93.5 + -30x + 2.7x2 = 0.0

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

Divide each side by '2.7'.
34.62962963 + -11.11111111x + x2 = 0

Move the constant term to the right:

Add '-34.62962963' to each side of the equation.
34.62962963 + -11.11111111x + -34.62962963 + x2 = 0 + -34.62962963

Reorder the terms:
34.62962963 + -34.62962963 + -11.11111111x + x2 = 0 + -34.62962963

Combine like terms: 34.62962963 + -34.62962963 = 0.00000000
0.00000000 + -11.11111111x + x2 = 0 + -34.62962963
-11.11111111x + x2 = 0 + -34.62962963

Combine like terms: 0 + -34.62962963 = -34.62962963
-11.11111111x + x2 = -34.62962963

The x term is -11.11111111x.  Take half its coefficient (-5.555555555).
Square it (30.86419752) and add it to both sides.

Add '30.86419752' to each side of the equation.
-11.11111111x + 30.86419752 + x2 = -34.62962963 + 30.86419752

Reorder the terms:
30.86419752 + -11.11111111x + x2 = -34.62962963 + 30.86419752

Combine like terms: -34.62962963 + 30.86419752 = -3.76543211
30.86419752 + -11.11111111x + x2 = -3.76543211

Factor a perfect square on the left side:
(x + -5.555555555)(x + -5.555555555) = -3.76543211

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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