2t^2+11t-35=0

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Solution for 2t^2+11t-35=0 equation:


Simplifying
2t2 + 11t + -35 = 0

Reorder the terms:
-35 + 11t + 2t2 = 0

Solving
-35 + 11t + 2t2 = 0

Solving for variable 't'.

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

Divide each side by '2'.
-17.5 + 5.5t + t2 = 0

Move the constant term to the right:

Add '17.5' to each side of the equation.
-17.5 + 5.5t + 17.5 + t2 = 0 + 17.5

Reorder the terms:
-17.5 + 17.5 + 5.5t + t2 = 0 + 17.5

Combine like terms: -17.5 + 17.5 = 0.0
0.0 + 5.5t + t2 = 0 + 17.5
5.5t + t2 = 0 + 17.5

Combine like terms: 0 + 17.5 = 17.5
5.5t + t2 = 17.5

The t term is 5.5t.  Take half its coefficient (2.75).
Square it (7.5625) and add it to both sides.

Add '7.5625' to each side of the equation.
5.5t + 7.5625 + t2 = 17.5 + 7.5625

Reorder the terms:
7.5625 + 5.5t + t2 = 17.5 + 7.5625

Combine like terms: 17.5 + 7.5625 = 25.0625
7.5625 + 5.5t + t2 = 25.0625

Factor a perfect square on the left side:
(t + 2.75)(t + 2.75) = 25.0625

Calculate the square root of the right side: 5.006246099

Break this problem into two subproblems by setting 
(t + 2.75) equal to 5.006246099 and -5.006246099.

Subproblem 1

t + 2.75 = 5.006246099 Simplifying t + 2.75 = 5.006246099 Reorder the terms: 2.75 + t = 5.006246099 Solving 2.75 + t = 5.006246099 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-2.75' to each side of the equation. 2.75 + -2.75 + t = 5.006246099 + -2.75 Combine like terms: 2.75 + -2.75 = 0.00 0.00 + t = 5.006246099 + -2.75 t = 5.006246099 + -2.75 Combine like terms: 5.006246099 + -2.75 = 2.256246099 t = 2.256246099 Simplifying t = 2.256246099

Subproblem 2

t + 2.75 = -5.006246099 Simplifying t + 2.75 = -5.006246099 Reorder the terms: 2.75 + t = -5.006246099 Solving 2.75 + t = -5.006246099 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-2.75' to each side of the equation. 2.75 + -2.75 + t = -5.006246099 + -2.75 Combine like terms: 2.75 + -2.75 = 0.00 0.00 + t = -5.006246099 + -2.75 t = -5.006246099 + -2.75 Combine like terms: -5.006246099 + -2.75 = -7.756246099 t = -7.756246099 Simplifying t = -7.756246099

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2.256246099, -7.756246099}

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