100t^2+40t+1=0

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Solution for 100t^2+40t+1=0 equation:


Simplifying
100t2 + 40t + 1 = 0

Reorder the terms:
1 + 40t + 100t2 = 0

Solving
1 + 40t + 100t2 = 0

Solving for variable 't'.

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

Divide each side by '100'.
0.01 + 0.4t + t2 = 0

Move the constant term to the right:

Add '-0.01' to each side of the equation.
0.01 + 0.4t + -0.01 + t2 = 0 + -0.01

Reorder the terms:
0.01 + -0.01 + 0.4t + t2 = 0 + -0.01

Combine like terms: 0.01 + -0.01 = 0.00
0.00 + 0.4t + t2 = 0 + -0.01
0.4t + t2 = 0 + -0.01

Combine like terms: 0 + -0.01 = -0.01
0.4t + t2 = -0.01

The t term is 0.4t.  Take half its coefficient (0.2).
Square it (0.04) and add it to both sides.

Add '0.04' to each side of the equation.
0.4t + 0.04 + t2 = -0.01 + 0.04

Reorder the terms:
0.04 + 0.4t + t2 = -0.01 + 0.04

Combine like terms: -0.01 + 0.04 = 0.03
0.04 + 0.4t + t2 = 0.03

Factor a perfect square on the left side:
(t + 0.2)(t + 0.2) = 0.03

Calculate the square root of the right side: 0.173205081

Break this problem into two subproblems by setting 
(t + 0.2) equal to 0.173205081 and -0.173205081.

Subproblem 1

t + 0.2 = 0.173205081 Simplifying t + 0.2 = 0.173205081 Reorder the terms: 0.2 + t = 0.173205081 Solving 0.2 + t = 0.173205081 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.2' to each side of the equation. 0.2 + -0.2 + t = 0.173205081 + -0.2 Combine like terms: 0.2 + -0.2 = 0.0 0.0 + t = 0.173205081 + -0.2 t = 0.173205081 + -0.2 Combine like terms: 0.173205081 + -0.2 = -0.026794919 t = -0.026794919 Simplifying t = -0.026794919

Subproblem 2

t + 0.2 = -0.173205081 Simplifying t + 0.2 = -0.173205081 Reorder the terms: 0.2 + t = -0.173205081 Solving 0.2 + t = -0.173205081 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.2' to each side of the equation. 0.2 + -0.2 + t = -0.173205081 + -0.2 Combine like terms: 0.2 + -0.2 = 0.0 0.0 + t = -0.173205081 + -0.2 t = -0.173205081 + -0.2 Combine like terms: -0.173205081 + -0.2 = -0.373205081 t = -0.373205081 Simplifying t = -0.373205081

Solution

The solution to the problem is based on the solutions from the subproblems. t = {-0.026794919, -0.373205081}

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