5t^2+20t=625

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Solution for 5t^2+20t=625 equation:


Simplifying
5t2 + 20t = 625

Reorder the terms:
20t + 5t2 = 625

Solving
20t + 5t2 = 625

Solving for variable 't'.

Reorder the terms:
-625 + 20t + 5t2 = 625 + -625

Combine like terms: 625 + -625 = 0
-625 + 20t + 5t2 = 0

Factor out the Greatest Common Factor (GCF), '5'.
5(-125 + 4t + t2) = 0

Ignore the factor 5.

Subproblem 1

Set the factor '(-125 + 4t + t2)' equal to zero and attempt to solve: Simplifying -125 + 4t + t2 = 0 Solving -125 + 4t + t2 = 0 Begin completing the square. Move the constant term to the right: Add '125' to each side of the equation. -125 + 4t + 125 + t2 = 0 + 125 Reorder the terms: -125 + 125 + 4t + t2 = 0 + 125 Combine like terms: -125 + 125 = 0 0 + 4t + t2 = 0 + 125 4t + t2 = 0 + 125 Combine like terms: 0 + 125 = 125 4t + t2 = 125 The t term is 4t. Take half its coefficient (2). Square it (4) and add it to both sides. Add '4' to each side of the equation. 4t + 4 + t2 = 125 + 4 Reorder the terms: 4 + 4t + t2 = 125 + 4 Combine like terms: 125 + 4 = 129 4 + 4t + t2 = 129 Factor a perfect square on the left side: (t + 2)(t + 2) = 129 Calculate the square root of the right side: 11.357816692 Break this problem into two subproblems by setting (t + 2) equal to 11.357816692 and -11.357816692.

Subproblem 1

t + 2 = 11.357816692 Simplifying t + 2 = 11.357816692 Reorder the terms: 2 + t = 11.357816692 Solving 2 + t = 11.357816692 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + t = 11.357816692 + -2 Combine like terms: 2 + -2 = 0 0 + t = 11.357816692 + -2 t = 11.357816692 + -2 Combine like terms: 11.357816692 + -2 = 9.357816692 t = 9.357816692 Simplifying t = 9.357816692

Subproblem 2

t + 2 = -11.357816692 Simplifying t + 2 = -11.357816692 Reorder the terms: 2 + t = -11.357816692 Solving 2 + t = -11.357816692 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + t = -11.357816692 + -2 Combine like terms: 2 + -2 = 0 0 + t = -11.357816692 + -2 t = -11.357816692 + -2 Combine like terms: -11.357816692 + -2 = -13.357816692 t = -13.357816692 Simplifying t = -13.357816692

Solution

The solution to the problem is based on the solutions from the subproblems. t = {9.357816692, -13.357816692}

Solution

t = {9.357816692, -13.357816692}

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