50=19t+15t^2

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Solution for 50=19t+15t^2 equation:


Simplifying
50 = 19t + 15t2

Solving
50 = 19t + 15t2

Solving for variable 't'.

Reorder the terms:
50 + -19t + -15t2 = 19t + -19t + 15t2 + -15t2

Combine like terms: 19t + -19t = 0
50 + -19t + -15t2 = 0 + 15t2 + -15t2
50 + -19t + -15t2 = 15t2 + -15t2

Combine like terms: 15t2 + -15t2 = 0
50 + -19t + -15t2 = 0

Begin completing the square.  Divide all terms by
-15 the coefficient of the squared term: 

Divide each side by '-15'.
-3.333333333 + 1.266666667t + t2 = 0

Move the constant term to the right:

Add '3.333333333' to each side of the equation.
-3.333333333 + 1.266666667t + 3.333333333 + t2 = 0 + 3.333333333

Reorder the terms:
-3.333333333 + 3.333333333 + 1.266666667t + t2 = 0 + 3.333333333

Combine like terms: -3.333333333 + 3.333333333 = 0.000000000
0.000000000 + 1.266666667t + t2 = 0 + 3.333333333
1.266666667t + t2 = 0 + 3.333333333

Combine like terms: 0 + 3.333333333 = 3.333333333
1.266666667t + t2 = 3.333333333

The t term is 1.266666667t.  Take half its coefficient (0.6333333335).
Square it (0.4011111113) and add it to both sides.

Add '0.4011111113' to each side of the equation.
1.266666667t + 0.4011111113 + t2 = 3.333333333 + 0.4011111113

Reorder the terms:
0.4011111113 + 1.266666667t + t2 = 3.333333333 + 0.4011111113

Combine like terms: 3.333333333 + 0.4011111113 = 3.7344444443
0.4011111113 + 1.266666667t + t2 = 3.7344444443

Factor a perfect square on the left side:
(t + 0.6333333335)(t + 0.6333333335) = 3.7344444443

Calculate the square root of the right side: 1.932471072

Break this problem into two subproblems by setting 
(t + 0.6333333335) equal to 1.932471072 and -1.932471072.

Subproblem 1

t + 0.6333333335 = 1.932471072 Simplifying t + 0.6333333335 = 1.932471072 Reorder the terms: 0.6333333335 + t = 1.932471072 Solving 0.6333333335 + t = 1.932471072 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.6333333335' to each side of the equation. 0.6333333335 + -0.6333333335 + t = 1.932471072 + -0.6333333335 Combine like terms: 0.6333333335 + -0.6333333335 = 0.0000000000 0.0000000000 + t = 1.932471072 + -0.6333333335 t = 1.932471072 + -0.6333333335 Combine like terms: 1.932471072 + -0.6333333335 = 1.2991377385 t = 1.2991377385 Simplifying t = 1.2991377385

Subproblem 2

t + 0.6333333335 = -1.932471072 Simplifying t + 0.6333333335 = -1.932471072 Reorder the terms: 0.6333333335 + t = -1.932471072 Solving 0.6333333335 + t = -1.932471072 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.6333333335' to each side of the equation. 0.6333333335 + -0.6333333335 + t = -1.932471072 + -0.6333333335 Combine like terms: 0.6333333335 + -0.6333333335 = 0.0000000000 0.0000000000 + t = -1.932471072 + -0.6333333335 t = -1.932471072 + -0.6333333335 Combine like terms: -1.932471072 + -0.6333333335 = -2.5658044055 t = -2.5658044055 Simplifying t = -2.5658044055

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.2991377385, -2.5658044055}

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