t^2+30t-200=0

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Solution for t^2+30t-200=0 equation:


Simplifying
t2 + 30t + -200 = 0

Reorder the terms:
-200 + 30t + t2 = 0

Solving
-200 + 30t + t2 = 0

Solving for variable 't'.

Begin completing the square.

Move the constant term to the right:

Add '200' to each side of the equation.
-200 + 30t + 200 + t2 = 0 + 200

Reorder the terms:
-200 + 200 + 30t + t2 = 0 + 200

Combine like terms: -200 + 200 = 0
0 + 30t + t2 = 0 + 200
30t + t2 = 0 + 200

Combine like terms: 0 + 200 = 200
30t + t2 = 200

The t term is 30t.  Take half its coefficient (15).
Square it (225) and add it to both sides.

Add '225' to each side of the equation.
30t + 225 + t2 = 200 + 225

Reorder the terms:
225 + 30t + t2 = 200 + 225

Combine like terms: 200 + 225 = 425
225 + 30t + t2 = 425

Factor a perfect square on the left side:
(t + 15)(t + 15) = 425

Calculate the square root of the right side: 20.615528128

Break this problem into two subproblems by setting 
(t + 15) equal to 20.615528128 and -20.615528128.

Subproblem 1

t + 15 = 20.615528128 Simplifying t + 15 = 20.615528128 Reorder the terms: 15 + t = 20.615528128 Solving 15 + t = 20.615528128 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + t = 20.615528128 + -15 Combine like terms: 15 + -15 = 0 0 + t = 20.615528128 + -15 t = 20.615528128 + -15 Combine like terms: 20.615528128 + -15 = 5.615528128 t = 5.615528128 Simplifying t = 5.615528128

Subproblem 2

t + 15 = -20.615528128 Simplifying t + 15 = -20.615528128 Reorder the terms: 15 + t = -20.615528128 Solving 15 + t = -20.615528128 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + t = -20.615528128 + -15 Combine like terms: 15 + -15 = 0 0 + t = -20.615528128 + -15 t = -20.615528128 + -15 Combine like terms: -20.615528128 + -15 = -35.615528128 t = -35.615528128 Simplifying t = -35.615528128

Solution

The solution to the problem is based on the solutions from the subproblems. t = {5.615528128, -35.615528128}

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