8.5t^2+5t=14

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Solution for 8.5t^2+5t=14 equation:


Simplifying
8.5t2 + 5t = 14

Reorder the terms:
5t + 8.5t2 = 14

Solving
5t + 8.5t2 = 14

Solving for variable 't'.

Reorder the terms:
-14 + 5t + 8.5t2 = 14 + -14

Combine like terms: 14 + -14 = 0
-14 + 5t + 8.5t2 = 0

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

Divide each side by '8.5'.
-1.647058824 + 0.5882352941t + t2 = 0

Move the constant term to the right:

Add '1.647058824' to each side of the equation.
-1.647058824 + 0.5882352941t + 1.647058824 + t2 = 0 + 1.647058824

Reorder the terms:
-1.647058824 + 1.647058824 + 0.5882352941t + t2 = 0 + 1.647058824

Combine like terms: -1.647058824 + 1.647058824 = 0.000000000
0.000000000 + 0.5882352941t + t2 = 0 + 1.647058824
0.5882352941t + t2 = 0 + 1.647058824

Combine like terms: 0 + 1.647058824 = 1.647058824
0.5882352941t + t2 = 1.647058824

The t term is 0.5882352941t.  Take half its coefficient (0.2941176471).
Square it (0.08650519034) and add it to both sides.

Add '0.08650519034' to each side of the equation.
0.5882352941t + 0.08650519034 + t2 = 1.647058824 + 0.08650519034

Reorder the terms:
0.08650519034 + 0.5882352941t + t2 = 1.647058824 + 0.08650519034

Combine like terms: 1.647058824 + 0.08650519034 = 1.73356401434
0.08650519034 + 0.5882352941t + t2 = 1.73356401434

Factor a perfect square on the left side:
(t + 0.2941176471)(t + 0.2941176471) = 1.73356401434

Calculate the square root of the right side: 1.316648782

Break this problem into two subproblems by setting 
(t + 0.2941176471) equal to 1.316648782 and -1.316648782.

Subproblem 1

t + 0.2941176471 = 1.316648782 Simplifying t + 0.2941176471 = 1.316648782 Reorder the terms: 0.2941176471 + t = 1.316648782 Solving 0.2941176471 + t = 1.316648782 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.2941176471' to each side of the equation. 0.2941176471 + -0.2941176471 + t = 1.316648782 + -0.2941176471 Combine like terms: 0.2941176471 + -0.2941176471 = 0.0000000000 0.0000000000 + t = 1.316648782 + -0.2941176471 t = 1.316648782 + -0.2941176471 Combine like terms: 1.316648782 + -0.2941176471 = 1.0225311349 t = 1.0225311349 Simplifying t = 1.0225311349

Subproblem 2

t + 0.2941176471 = -1.316648782 Simplifying t + 0.2941176471 = -1.316648782 Reorder the terms: 0.2941176471 + t = -1.316648782 Solving 0.2941176471 + t = -1.316648782 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.2941176471' to each side of the equation. 0.2941176471 + -0.2941176471 + t = -1.316648782 + -0.2941176471 Combine like terms: 0.2941176471 + -0.2941176471 = 0.0000000000 0.0000000000 + t = -1.316648782 + -0.2941176471 t = -1.316648782 + -0.2941176471 Combine like terms: -1.316648782 + -0.2941176471 = -1.6107664291 t = -1.6107664291 Simplifying t = -1.6107664291

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.0225311349, -1.6107664291}

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