(2x^2+6x-5)=85(x^2+1)

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Solution for (2x^2+6x-5)=85(x^2+1) equation:


Simplifying
(2x2 + 6x + -5) = 85(x2 + 1)

Reorder the terms:
(-5 + 6x + 2x2) = 85(x2 + 1)

Remove parenthesis around (-5 + 6x + 2x2)
-5 + 6x + 2x2 = 85(x2 + 1)

Reorder the terms:
-5 + 6x + 2x2 = 85(1 + x2)
-5 + 6x + 2x2 = (1 * 85 + x2 * 85)
-5 + 6x + 2x2 = (85 + 85x2)

Solving
-5 + 6x + 2x2 = 85 + 85x2

Solving for variable 'x'.

Reorder the terms:
-5 + -85 + 6x + 2x2 + -85x2 = 85 + 85x2 + -85 + -85x2

Combine like terms: -5 + -85 = -90
-90 + 6x + 2x2 + -85x2 = 85 + 85x2 + -85 + -85x2

Combine like terms: 2x2 + -85x2 = -83x2
-90 + 6x + -83x2 = 85 + 85x2 + -85 + -85x2

Reorder the terms:
-90 + 6x + -83x2 = 85 + -85 + 85x2 + -85x2

Combine like terms: 85 + -85 = 0
-90 + 6x + -83x2 = 0 + 85x2 + -85x2
-90 + 6x + -83x2 = 85x2 + -85x2

Combine like terms: 85x2 + -85x2 = 0
-90 + 6x + -83x2 = 0

Begin completing the square.  Divide all terms by
-83 the coefficient of the squared term: 

Divide each side by '-83'.
1.084337349 + -0.07228915663x + x2 = 0

Move the constant term to the right:

Add '-1.084337349' to each side of the equation.
1.084337349 + -0.07228915663x + -1.084337349 + x2 = 0 + -1.084337349

Reorder the terms:
1.084337349 + -1.084337349 + -0.07228915663x + x2 = 0 + -1.084337349

Combine like terms: 1.084337349 + -1.084337349 = 0.000000000
0.000000000 + -0.07228915663x + x2 = 0 + -1.084337349
-0.07228915663x + x2 = 0 + -1.084337349

Combine like terms: 0 + -1.084337349 = -1.084337349
-0.07228915663x + x2 = -1.084337349

The x term is -0.07228915663x.  Take half its coefficient (-0.03614457832).
Square it (0.001306430542) and add it to both sides.

Add '0.001306430542' to each side of the equation.
-0.07228915663x + 0.001306430542 + x2 = -1.084337349 + 0.001306430542

Reorder the terms:
0.001306430542 + -0.07228915663x + x2 = -1.084337349 + 0.001306430542

Combine like terms: -1.084337349 + 0.001306430542 = -1.083030918458
0.001306430542 + -0.07228915663x + x2 = -1.083030918458

Factor a perfect square on the left side:
(x + -0.03614457832)(x + -0.03614457832) = -1.083030918458

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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