5t^2+14t=32.8

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Solution for 5t^2+14t=32.8 equation:


Simplifying
5t2 + 14t = 32.8

Reorder the terms:
14t + 5t2 = 32.8

Solving
14t + 5t2 = 32.8

Solving for variable 't'.

Reorder the terms:
-32.8 + 14t + 5t2 = 32.8 + -32.8

Combine like terms: 32.8 + -32.8 = 0.0
-32.8 + 14t + 5t2 = 0.0

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

Divide each side by '5'.
-6.56 + 2.8t + t2 = 0.0

Move the constant term to the right:

Add '6.56' to each side of the equation.
-6.56 + 2.8t + 6.56 + t2 = 0.0 + 6.56

Reorder the terms:
-6.56 + 6.56 + 2.8t + t2 = 0.0 + 6.56

Combine like terms: -6.56 + 6.56 = 0.00
0.00 + 2.8t + t2 = 0.0 + 6.56
2.8t + t2 = 0.0 + 6.56

Combine like terms: 0.0 + 6.56 = 6.56
2.8t + t2 = 6.56

The t term is 2.8t.  Take half its coefficient (1.4).
Square it (1.96) and add it to both sides.

Add '1.96' to each side of the equation.
2.8t + 1.96 + t2 = 6.56 + 1.96

Reorder the terms:
1.96 + 2.8t + t2 = 6.56 + 1.96

Combine like terms: 6.56 + 1.96 = 8.52
1.96 + 2.8t + t2 = 8.52

Factor a perfect square on the left side:
(t + 1.4)(t + 1.4) = 8.52

Calculate the square root of the right side: 2.918903904

Break this problem into two subproblems by setting 
(t + 1.4) equal to 2.918903904 and -2.918903904.

Subproblem 1

t + 1.4 = 2.918903904 Simplifying t + 1.4 = 2.918903904 Reorder the terms: 1.4 + t = 2.918903904 Solving 1.4 + t = 2.918903904 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-1.4' to each side of the equation. 1.4 + -1.4 + t = 2.918903904 + -1.4 Combine like terms: 1.4 + -1.4 = 0.0 0.0 + t = 2.918903904 + -1.4 t = 2.918903904 + -1.4 Combine like terms: 2.918903904 + -1.4 = 1.518903904 t = 1.518903904 Simplifying t = 1.518903904

Subproblem 2

t + 1.4 = -2.918903904 Simplifying t + 1.4 = -2.918903904 Reorder the terms: 1.4 + t = -2.918903904 Solving 1.4 + t = -2.918903904 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-1.4' to each side of the equation. 1.4 + -1.4 + t = -2.918903904 + -1.4 Combine like terms: 1.4 + -1.4 = 0.0 0.0 + t = -2.918903904 + -1.4 t = -2.918903904 + -1.4 Combine like terms: -2.918903904 + -1.4 = -4.318903904 t = -4.318903904 Simplifying t = -4.318903904

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.518903904, -4.318903904}

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