t^2=20t+16

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Solution for t^2=20t+16 equation:


Simplifying
t2 = 20t + 16

Reorder the terms:
t2 = 16 + 20t

Solving
t2 = 16 + 20t

Solving for variable 't'.

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

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

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

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

Begin completing the square.

Move the constant term to the right:

Add '16' to each side of the equation.
-16 + -20t + 16 + t2 = 0 + 16

Reorder the terms:
-16 + 16 + -20t + t2 = 0 + 16

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

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

The t term is -20t.  Take half its coefficient (-10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
-20t + 100 + t2 = 16 + 100

Reorder the terms:
100 + -20t + t2 = 16 + 100

Combine like terms: 16 + 100 = 116
100 + -20t + t2 = 116

Factor a perfect square on the left side:
(t + -10)(t + -10) = 116

Calculate the square root of the right side: 10.770329614

Break this problem into two subproblems by setting 
(t + -10) equal to 10.770329614 and -10.770329614.

Subproblem 1

t + -10 = 10.770329614 Simplifying t + -10 = 10.770329614 Reorder the terms: -10 + t = 10.770329614 Solving -10 + t = 10.770329614 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + t = 10.770329614 + 10 Combine like terms: -10 + 10 = 0 0 + t = 10.770329614 + 10 t = 10.770329614 + 10 Combine like terms: 10.770329614 + 10 = 20.770329614 t = 20.770329614 Simplifying t = 20.770329614

Subproblem 2

t + -10 = -10.770329614 Simplifying t + -10 = -10.770329614 Reorder the terms: -10 + t = -10.770329614 Solving -10 + t = -10.770329614 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + t = -10.770329614 + 10 Combine like terms: -10 + 10 = 0 0 + t = -10.770329614 + 10 t = -10.770329614 + 10 Combine like terms: -10.770329614 + 10 = -0.770329614 t = -0.770329614 Simplifying t = -0.770329614

Solution

The solution to the problem is based on the solutions from the subproblems. t = {20.770329614, -0.770329614}

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