5t^2+27t-1=0

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Solution for 5t^2+27t-1=0 equation:


Simplifying
5t2 + 27t + -1 = 0

Reorder the terms:
-1 + 27t + 5t2 = 0

Solving
-1 + 27t + 5t2 = 0

Solving for variable 't'.

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

Divide each side by '5'.
-0.2 + 5.4t + t2 = 0

Move the constant term to the right:

Add '0.2' to each side of the equation.
-0.2 + 5.4t + 0.2 + t2 = 0 + 0.2

Reorder the terms:
-0.2 + 0.2 + 5.4t + t2 = 0 + 0.2

Combine like terms: -0.2 + 0.2 = 0.0
0.0 + 5.4t + t2 = 0 + 0.2
5.4t + t2 = 0 + 0.2

Combine like terms: 0 + 0.2 = 0.2
5.4t + t2 = 0.2

The t term is 5.4t.  Take half its coefficient (2.7).
Square it (7.29) and add it to both sides.

Add '7.29' to each side of the equation.
5.4t + 7.29 + t2 = 0.2 + 7.29

Reorder the terms:
7.29 + 5.4t + t2 = 0.2 + 7.29

Combine like terms: 0.2 + 7.29 = 7.49
7.29 + 5.4t + t2 = 7.49

Factor a perfect square on the left side:
(t + 2.7)(t + 2.7) = 7.49

Calculate the square root of the right side: 2.736786437

Break this problem into two subproblems by setting 
(t + 2.7) equal to 2.736786437 and -2.736786437.

Subproblem 1

t + 2.7 = 2.736786437 Simplifying t + 2.7 = 2.736786437 Reorder the terms: 2.7 + t = 2.736786437 Solving 2.7 + t = 2.736786437 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-2.7' to each side of the equation. 2.7 + -2.7 + t = 2.736786437 + -2.7 Combine like terms: 2.7 + -2.7 = 0.0 0.0 + t = 2.736786437 + -2.7 t = 2.736786437 + -2.7 Combine like terms: 2.736786437 + -2.7 = 0.036786437 t = 0.036786437 Simplifying t = 0.036786437

Subproblem 2

t + 2.7 = -2.736786437 Simplifying t + 2.7 = -2.736786437 Reorder the terms: 2.7 + t = -2.736786437 Solving 2.7 + t = -2.736786437 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-2.7' to each side of the equation. 2.7 + -2.7 + t = -2.736786437 + -2.7 Combine like terms: 2.7 + -2.7 = 0.0 0.0 + t = -2.736786437 + -2.7 t = -2.736786437 + -2.7 Combine like terms: -2.736786437 + -2.7 = -5.436786437 t = -5.436786437 Simplifying t = -5.436786437

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.036786437, -5.436786437}

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