22=4+25t-16t^2

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Solution for 22=4+25t-16t^2 equation: 


Simplifying
22 = 4 + 25t + -16t2

Solving
22 = 4 + 25t + -16t2

Solving for variable 't'.

Combine like terms: 22 + -4 = 18
18 + -25t + 16t2 = 4 + 25t + -16t2 + -4 + -25t + 16t2

Reorder the terms:
18 + -25t + 16t2 = 4 + -4 + 25t + -25t + -16t2 + 16t2

Combine like terms: 4 + -4 = 0
18 + -25t + 16t2 = 0 + 25t + -25t + -16t2 + 16t2
18 + -25t + 16t2 = 25t + -25t + -16t2 + 16t2

Combine like terms: 25t + -25t = 0
18 + -25t + 16t2 = 0 + -16t2 + 16t2
18 + -25t + 16t2 = -16t2 + 16t2

Combine like terms: -16t2 + 16t2 = 0
18 + -25t + 16t2 = 0

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

Divide each side by '16'.
1.125 + -1.5625t + t2 = 0

Move the constant term to the right:

Add '-1.125' to each side of the equation.
1.125 + -1.5625t + -1.125 + t2 = 0 + -1.125

Reorder the terms:
1.125 + -1.125 + -1.5625t + t2 = 0 + -1.125

Combine like terms: 1.125 + -1.125 = 0.000
0.000 + -1.5625t + t2 = 0 + -1.125
-1.5625t + t2 = 0 + -1.125

Combine like terms: 0 + -1.125 = -1.125
-1.5625t + t2 = -1.125

The t term is -1.5625t.  Take half its coefficient (-0.78125).
Square it (0.6103515625) and add it to both sides.

Add '0.6103515625' to each side of the equation.
-1.5625t + 0.6103515625 + t2 = -1.125 + 0.6103515625

Reorder the terms:
0.6103515625 + -1.5625t + t2 = -1.125 + 0.6103515625

Combine like terms: -1.125 + 0.6103515625 = -0.5146484375
0.6103515625 + -1.5625t + t2 = -0.5146484375

Factor a perfect square on the left side:
(t + -0.78125)(t + -0.78125) = -0.5146484375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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