t^2+10t-130=0

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Solution for t^2+10t-130=0 equation:


Simplifying
t2 + 10t + -130 = 0

Reorder the terms:
-130 + 10t + t2 = 0

Solving
-130 + 10t + t2 = 0

Solving for variable 't'.

Begin completing the square.

Move the constant term to the right:

Add '130' to each side of the equation.
-130 + 10t + 130 + t2 = 0 + 130

Reorder the terms:
-130 + 130 + 10t + t2 = 0 + 130

Combine like terms: -130 + 130 = 0
0 + 10t + t2 = 0 + 130
10t + t2 = 0 + 130

Combine like terms: 0 + 130 = 130
10t + t2 = 130

The t term is 10t.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10t + 25 + t2 = 130 + 25

Reorder the terms:
25 + 10t + t2 = 130 + 25

Combine like terms: 130 + 25 = 155
25 + 10t + t2 = 155

Factor a perfect square on the left side:
(t + 5)(t + 5) = 155

Calculate the square root of the right side: 12.449899598

Break this problem into two subproblems by setting 
(t + 5) equal to 12.449899598 and -12.449899598.

Subproblem 1

t + 5 = 12.449899598 Simplifying t + 5 = 12.449899598 Reorder the terms: 5 + t = 12.449899598 Solving 5 + t = 12.449899598 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + t = 12.449899598 + -5 Combine like terms: 5 + -5 = 0 0 + t = 12.449899598 + -5 t = 12.449899598 + -5 Combine like terms: 12.449899598 + -5 = 7.449899598 t = 7.449899598 Simplifying t = 7.449899598

Subproblem 2

t + 5 = -12.449899598 Simplifying t + 5 = -12.449899598 Reorder the terms: 5 + t = -12.449899598 Solving 5 + t = -12.449899598 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + t = -12.449899598 + -5 Combine like terms: 5 + -5 = 0 0 + t = -12.449899598 + -5 t = -12.449899598 + -5 Combine like terms: -12.449899598 + -5 = -17.449899598 t = -17.449899598 Simplifying t = -17.449899598

Solution

The solution to the problem is based on the solutions from the subproblems. t = {7.449899598, -17.449899598}

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