-5t^2+21.9t=24

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Solution for -5t^2+21.9t=24 equation:


Simplifying
-5t2 + 21.9t = 24

Reorder the terms:
21.9t + -5t2 = 24

Solving
21.9t + -5t2 = 24

Solving for variable 't'.

Reorder the terms:
-24 + 21.9t + -5t2 = 24 + -24

Combine like terms: 24 + -24 = 0
-24 + 21.9t + -5t2 = 0

Begin completing the square.  Divide all terms by
-5 the coefficient of the squared term: 

Divide each side by '-5'.
4.8 + -4.38t + t2 = 0

Move the constant term to the right:

Add '-4.8' to each side of the equation.
4.8 + -4.38t + -4.8 + t2 = 0 + -4.8

Reorder the terms:
4.8 + -4.8 + -4.38t + t2 = 0 + -4.8

Combine like terms: 4.8 + -4.8 = 0.0
0.0 + -4.38t + t2 = 0 + -4.8
-4.38t + t2 = 0 + -4.8

Combine like terms: 0 + -4.8 = -4.8
-4.38t + t2 = -4.8

The t term is -4.38t.  Take half its coefficient (-2.19).
Square it (4.7961) and add it to both sides.

Add '4.7961' to each side of the equation.
-4.38t + 4.7961 + t2 = -4.8 + 4.7961

Reorder the terms:
4.7961 + -4.38t + t2 = -4.8 + 4.7961

Combine like terms: -4.8 + 4.7961 = -0.0039
4.7961 + -4.38t + t2 = -0.0039

Factor a perfect square on the left side:
(t + -2.19)(t + -2.19) = -0.0039

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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