8t^2+61t=-120

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Solution for 8t^2+61t=-120 equation:


Simplifying
8t2 + 61t = -120

Reorder the terms:
61t + 8t2 = -120

Solving
61t + 8t2 = -120

Solving for variable 't'.

Reorder the terms:
120 + 61t + 8t2 = -120 + 120

Combine like terms: -120 + 120 = 0
120 + 61t + 8t2 = 0

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

Divide each side by '8'.
15 + 7.625t + t2 = 0

Move the constant term to the right:

Add '-15' to each side of the equation.
15 + 7.625t + -15 + t2 = 0 + -15

Reorder the terms:
15 + -15 + 7.625t + t2 = 0 + -15

Combine like terms: 15 + -15 = 0
0 + 7.625t + t2 = 0 + -15
7.625t + t2 = 0 + -15

Combine like terms: 0 + -15 = -15
7.625t + t2 = -15

The t term is 7.625t.  Take half its coefficient (3.8125).
Square it (14.53515625) and add it to both sides.

Add '14.53515625' to each side of the equation.
7.625t + 14.53515625 + t2 = -15 + 14.53515625

Reorder the terms:
14.53515625 + 7.625t + t2 = -15 + 14.53515625

Combine like terms: -15 + 14.53515625 = -0.46484375
14.53515625 + 7.625t + t2 = -0.46484375

Factor a perfect square on the left side:
(t + 3.8125)(t + 3.8125) = -0.46484375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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