t^2-11t-7=0

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Solution for t^2-11t-7=0 equation:


Simplifying
t2 + -11t + -7 = 0

Reorder the terms:
-7 + -11t + t2 = 0

Solving
-7 + -11t + t2 = 0

Solving for variable 't'.

Begin completing the square.

Move the constant term to the right:

Add '7' to each side of the equation.
-7 + -11t + 7 + t2 = 0 + 7

Reorder the terms:
-7 + 7 + -11t + t2 = 0 + 7

Combine like terms: -7 + 7 = 0
0 + -11t + t2 = 0 + 7
-11t + t2 = 0 + 7

Combine like terms: 0 + 7 = 7
-11t + t2 = 7

The t term is -11t.  Take half its coefficient (-5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
-11t + 30.25 + t2 = 7 + 30.25

Reorder the terms:
30.25 + -11t + t2 = 7 + 30.25

Combine like terms: 7 + 30.25 = 37.25
30.25 + -11t + t2 = 37.25

Factor a perfect square on the left side:
(t + -5.5)(t + -5.5) = 37.25

Calculate the square root of the right side: 6.103277808

Break this problem into two subproblems by setting 
(t + -5.5) equal to 6.103277808 and -6.103277808.

Subproblem 1

t + -5.5 = 6.103277808 Simplifying t + -5.5 = 6.103277808 Reorder the terms: -5.5 + t = 6.103277808 Solving -5.5 + t = 6.103277808 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + t = 6.103277808 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + t = 6.103277808 + 5.5 t = 6.103277808 + 5.5 Combine like terms: 6.103277808 + 5.5 = 11.603277808 t = 11.603277808 Simplifying t = 11.603277808

Subproblem 2

t + -5.5 = -6.103277808 Simplifying t + -5.5 = -6.103277808 Reorder the terms: -5.5 + t = -6.103277808 Solving -5.5 + t = -6.103277808 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + t = -6.103277808 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + t = -6.103277808 + 5.5 t = -6.103277808 + 5.5 Combine like terms: -6.103277808 + 5.5 = -0.603277808 t = -0.603277808 Simplifying t = -0.603277808

Solution

The solution to the problem is based on the solutions from the subproblems. t = {11.603277808, -0.603277808}

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