1.5t^2-45t-45=0

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Solution for 1.5t^2-45t-45=0 equation:


Simplifying
1.5t2 + -45t + -45 = 0

Reorder the terms:
-45 + -45t + 1.5t2 = 0

Solving
-45 + -45t + 1.5t2 = 0

Solving for variable 't'.

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

Divide each side by '1.5'.
-30 + -30t + t2 = 0

Move the constant term to the right:

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

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

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

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

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 = 30 + 225

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

Combine like terms: 30 + 225 = 255
225 + -30t + t2 = 255

Factor a perfect square on the left side:
(t + -15)(t + -15) = 255

Calculate the square root of the right side: 15.968719423

Break this problem into two subproblems by setting 
(t + -15) equal to 15.968719423 and -15.968719423.

Subproblem 1

t + -15 = 15.968719423 Simplifying t + -15 = 15.968719423 Reorder the terms: -15 + t = 15.968719423 Solving -15 + t = 15.968719423 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 = 15.968719423 + 15 Combine like terms: -15 + 15 = 0 0 + t = 15.968719423 + 15 t = 15.968719423 + 15 Combine like terms: 15.968719423 + 15 = 30.968719423 t = 30.968719423 Simplifying t = 30.968719423

Subproblem 2

t + -15 = -15.968719423 Simplifying t + -15 = -15.968719423 Reorder the terms: -15 + t = -15.968719423 Solving -15 + t = -15.968719423 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 = -15.968719423 + 15 Combine like terms: -15 + 15 = 0 0 + t = -15.968719423 + 15 t = -15.968719423 + 15 Combine like terms: -15.968719423 + 15 = -0.968719423 t = -0.968719423 Simplifying t = -0.968719423

Solution

The solution to the problem is based on the solutions from the subproblems. t = {30.968719423, -0.968719423}

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