-16t^2+20t+5=30

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Solution for -16t^2+20t+5=30 equation:


Simplifying
-16t2 + 20t + 5 = 30

Reorder the terms:
5 + 20t + -16t2 = 30

Solving
5 + 20t + -16t2 = 30

Solving for variable 't'.

Reorder the terms:
5 + -30 + 20t + -16t2 = 30 + -30

Combine like terms: 5 + -30 = -25
-25 + 20t + -16t2 = 30 + -30

Combine like terms: 30 + -30 = 0
-25 + 20t + -16t2 = 0

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

Divide each side by '-16'.
1.5625 + -1.25t + t2 = 0

Move the constant term to the right:

Add '-1.5625' to each side of the equation.
1.5625 + -1.25t + -1.5625 + t2 = 0 + -1.5625

Reorder the terms:
1.5625 + -1.5625 + -1.25t + t2 = 0 + -1.5625

Combine like terms: 1.5625 + -1.5625 = 0.0000
0.0000 + -1.25t + t2 = 0 + -1.5625
-1.25t + t2 = 0 + -1.5625

Combine like terms: 0 + -1.5625 = -1.5625
-1.25t + t2 = -1.5625

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 = -1.5625 + 0.390625

Reorder the terms:
0.390625 + -1.25t + t2 = -1.5625 + 0.390625

Combine like terms: -1.5625 + 0.390625 = -1.171875
0.390625 + -1.25t + t2 = -1.171875

Factor a perfect square on the left side:
(t + -0.625)(t + -0.625) = -1.171875

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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