30t^2-19t=36

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Solution for 30t^2-19t=36 equation:


Simplifying
30t2 + -19t = 36

Reorder the terms:
-19t + 30t2 = 36

Solving
-19t + 30t2 = 36

Solving for variable 't'.

Reorder the terms:
-36 + -19t + 30t2 = 36 + -36

Combine like terms: 36 + -36 = 0
-36 + -19t + 30t2 = 0

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

Divide each side by '30'.
-1.2 + -0.6333333333t + t2 = 0

Move the constant term to the right:

Add '1.2' to each side of the equation.
-1.2 + -0.6333333333t + 1.2 + t2 = 0 + 1.2

Reorder the terms:
-1.2 + 1.2 + -0.6333333333t + t2 = 0 + 1.2

Combine like terms: -1.2 + 1.2 = 0.0
0.0 + -0.6333333333t + t2 = 0 + 1.2
-0.6333333333t + t2 = 0 + 1.2

Combine like terms: 0 + 1.2 = 1.2
-0.6333333333t + t2 = 1.2

The t term is -0.6333333333t.  Take half its coefficient (-0.3166666667).
Square it (0.1002777778) and add it to both sides.

Add '0.1002777778' to each side of the equation.
-0.6333333333t + 0.1002777778 + t2 = 1.2 + 0.1002777778

Reorder the terms:
0.1002777778 + -0.6333333333t + t2 = 1.2 + 0.1002777778

Combine like terms: 1.2 + 0.1002777778 = 1.3002777778
0.1002777778 + -0.6333333333t + t2 = 1.3002777778

Factor a perfect square on the left side:
(t + -0.3166666667)(t + -0.3166666667) = 1.3002777778

Calculate the square root of the right side: 1.140297232

Break this problem into two subproblems by setting 
(t + -0.3166666667) equal to 1.140297232 and -1.140297232.

Subproblem 1

t + -0.3166666667 = 1.140297232 Simplifying t + -0.3166666667 = 1.140297232 Reorder the terms: -0.3166666667 + t = 1.140297232 Solving -0.3166666667 + t = 1.140297232 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.3166666667' to each side of the equation. -0.3166666667 + 0.3166666667 + t = 1.140297232 + 0.3166666667 Combine like terms: -0.3166666667 + 0.3166666667 = 0.0000000000 0.0000000000 + t = 1.140297232 + 0.3166666667 t = 1.140297232 + 0.3166666667 Combine like terms: 1.140297232 + 0.3166666667 = 1.4569638987 t = 1.4569638987 Simplifying t = 1.4569638987

Subproblem 2

t + -0.3166666667 = -1.140297232 Simplifying t + -0.3166666667 = -1.140297232 Reorder the terms: -0.3166666667 + t = -1.140297232 Solving -0.3166666667 + t = -1.140297232 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.3166666667' to each side of the equation. -0.3166666667 + 0.3166666667 + t = -1.140297232 + 0.3166666667 Combine like terms: -0.3166666667 + 0.3166666667 = 0.0000000000 0.0000000000 + t = -1.140297232 + 0.3166666667 t = -1.140297232 + 0.3166666667 Combine like terms: -1.140297232 + 0.3166666667 = -0.8236305653 t = -0.8236305653 Simplifying t = -0.8236305653

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.4569638987, -0.8236305653}

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