12=-16t^2+20t+5

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Solution for 12=-16t^2+20t+5 equation:


Simplifying
12 = -16t2 + 20t + 5

Reorder the terms:
12 = 5 + 20t + -16t2

Solving
12 = 5 + 20t + -16t2

Solving for variable 't'.

Combine like terms: 12 + -5 = 7
7 + -20t + 16t2 = 5 + 20t + -16t2 + -5 + -20t + 16t2

Reorder the terms:
7 + -20t + 16t2 = 5 + -5 + 20t + -20t + -16t2 + 16t2

Combine like terms: 5 + -5 = 0
7 + -20t + 16t2 = 0 + 20t + -20t + -16t2 + 16t2
7 + -20t + 16t2 = 20t + -20t + -16t2 + 16t2

Combine like terms: 20t + -20t = 0
7 + -20t + 16t2 = 0 + -16t2 + 16t2
7 + -20t + 16t2 = -16t2 + 16t2

Combine like terms: -16t2 + 16t2 = 0
7 + -20t + 16t2 = 0

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

Divide each side by '16'.
0.4375 + -1.25t + t2 = 0

Move the constant term to the right:

Add '-0.4375' to each side of the equation.
0.4375 + -1.25t + -0.4375 + t2 = 0 + -0.4375

Reorder the terms:
0.4375 + -0.4375 + -1.25t + t2 = 0 + -0.4375

Combine like terms: 0.4375 + -0.4375 = 0.0000
0.0000 + -1.25t + t2 = 0 + -0.4375
-1.25t + t2 = 0 + -0.4375

Combine like terms: 0 + -0.4375 = -0.4375
-1.25t + t2 = -0.4375

The t term is -1.25t.  Take half its coefficient (-0.625).
Square it (0.390625) and add it to both sides.

Add '0.390625' to each side of the equation.
-1.25t + 0.390625 + t2 = -0.4375 + 0.390625

Reorder the terms:
0.390625 + -1.25t + t2 = -0.4375 + 0.390625

Combine like terms: -0.4375 + 0.390625 = -0.046875
0.390625 + -1.25t + t2 = -0.046875

Factor a perfect square on the left side:
(t + -0.625)(t + -0.625) = -0.046875

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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