4t^2+22t-25=0

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Solution for 4t^2+22t-25=0 equation:


Simplifying
4t2 + 22t + -25 = 0

Reorder the terms:
-25 + 22t + 4t2 = 0

Solving
-25 + 22t + 4t2 = 0

Solving for variable 't'.

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

Divide each side by '4'.
-6.25 + 5.5t + t2 = 0

Move the constant term to the right:

Add '6.25' to each side of the equation.
-6.25 + 5.5t + 6.25 + t2 = 0 + 6.25

Reorder the terms:
-6.25 + 6.25 + 5.5t + t2 = 0 + 6.25

Combine like terms: -6.25 + 6.25 = 0.00
0.00 + 5.5t + t2 = 0 + 6.25
5.5t + t2 = 0 + 6.25

Combine like terms: 0 + 6.25 = 6.25
5.5t + t2 = 6.25

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 = 6.25 + 7.5625

Reorder the terms:
7.5625 + 5.5t + t2 = 6.25 + 7.5625

Combine like terms: 6.25 + 7.5625 = 13.8125
7.5625 + 5.5t + t2 = 13.8125

Factor a perfect square on the left side:
(t + 2.75)(t + 2.75) = 13.8125

Calculate the square root of the right side: 3.716517187

Break this problem into two subproblems by setting 
(t + 2.75) equal to 3.716517187 and -3.716517187.

Subproblem 1

t + 2.75 = 3.716517187 Simplifying t + 2.75 = 3.716517187 Reorder the terms: 2.75 + t = 3.716517187 Solving 2.75 + t = 3.716517187 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 = 3.716517187 + -2.75 Combine like terms: 2.75 + -2.75 = 0.00 0.00 + t = 3.716517187 + -2.75 t = 3.716517187 + -2.75 Combine like terms: 3.716517187 + -2.75 = 0.966517187 t = 0.966517187 Simplifying t = 0.966517187

Subproblem 2

t + 2.75 = -3.716517187 Simplifying t + 2.75 = -3.716517187 Reorder the terms: 2.75 + t = -3.716517187 Solving 2.75 + t = -3.716517187 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 = -3.716517187 + -2.75 Combine like terms: 2.75 + -2.75 = 0.00 0.00 + t = -3.716517187 + -2.75 t = -3.716517187 + -2.75 Combine like terms: -3.716517187 + -2.75 = -6.466517187 t = -6.466517187 Simplifying t = -6.466517187

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.966517187, -6.466517187}

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