t^2+20t+100=25+100

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Solution for t^2+20t+100=25+100 equation:


Simplifying
t2 + 20t + 100 = 25 + 100

Reorder the terms:
100 + 20t + t2 = 25 + 100

Combine like terms: 25 + 100 = 125
100 + 20t + t2 = 125

Solving
100 + 20t + t2 = 125

Solving for variable 't'.

Reorder the terms:
100 + -125 + 20t + t2 = 125 + -125

Combine like terms: 100 + -125 = -25
-25 + 20t + t2 = 125 + -125

Combine like terms: 125 + -125 = 0
-25 + 20t + t2 = 0

Begin completing the square.

Move the constant term to the right:

Add '25' to each side of the equation.
-25 + 20t + 25 + t2 = 0 + 25

Reorder the terms:
-25 + 25 + 20t + t2 = 0 + 25

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

Combine like terms: 0 + 25 = 25
20t + t2 = 25

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 = 25 + 100

Reorder the terms:
100 + 20t + t2 = 25 + 100

Combine like terms: 25 + 100 = 125
100 + 20t + t2 = 125

Factor a perfect square on the left side:
(t + 10)(t + 10) = 125

Calculate the square root of the right side: 11.180339887

Break this problem into two subproblems by setting 
(t + 10) equal to 11.180339887 and -11.180339887.

Subproblem 1

t + 10 = 11.180339887 Simplifying t + 10 = 11.180339887 Reorder the terms: 10 + t = 11.180339887 Solving 10 + t = 11.180339887 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 = 11.180339887 + -10 Combine like terms: 10 + -10 = 0 0 + t = 11.180339887 + -10 t = 11.180339887 + -10 Combine like terms: 11.180339887 + -10 = 1.180339887 t = 1.180339887 Simplifying t = 1.180339887

Subproblem 2

t + 10 = -11.180339887 Simplifying t + 10 = -11.180339887 Reorder the terms: 10 + t = -11.180339887 Solving 10 + t = -11.180339887 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 = -11.180339887 + -10 Combine like terms: 10 + -10 = 0 0 + t = -11.180339887 + -10 t = -11.180339887 + -10 Combine like terms: -11.180339887 + -10 = -21.180339887 t = -21.180339887 Simplifying t = -21.180339887

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.180339887, -21.180339887}

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