5t^2+14t=2

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


Simplifying
5t2 + 14t = 2

Reorder the terms:
14t + 5t2 = 2

Solving
14t + 5t2 = 2

Solving for variable 't'.

Reorder the terms:
-2 + 14t + 5t2 = 2 + -2

Combine like terms: 2 + -2 = 0
-2 + 14t + 5t2 = 0

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

Divide each side by '5'.
-0.4 + 2.8t + t2 = 0

Move the constant term to the right:

Add '0.4' to each side of the equation.
-0.4 + 2.8t + 0.4 + t2 = 0 + 0.4

Reorder the terms:
-0.4 + 0.4 + 2.8t + t2 = 0 + 0.4

Combine like terms: -0.4 + 0.4 = 0.0
0.0 + 2.8t + t2 = 0 + 0.4
2.8t + t2 = 0 + 0.4

Combine like terms: 0 + 0.4 = 0.4
2.8t + t2 = 0.4

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 = 0.4 + 1.96

Reorder the terms:
1.96 + 2.8t + t2 = 0.4 + 1.96

Combine like terms: 0.4 + 1.96 = 2.36
1.96 + 2.8t + t2 = 2.36

Factor a perfect square on the left side:
(t + 1.4)(t + 1.4) = 2.36

Calculate the square root of the right side: 1.53622915

Break this problem into two subproblems by setting 
(t + 1.4) equal to 1.53622915 and -1.53622915.

Subproblem 1

t + 1.4 = 1.53622915 Simplifying t + 1.4 = 1.53622915 Reorder the terms: 1.4 + t = 1.53622915 Solving 1.4 + t = 1.53622915 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 = 1.53622915 + -1.4 Combine like terms: 1.4 + -1.4 = 0.0 0.0 + t = 1.53622915 + -1.4 t = 1.53622915 + -1.4 Combine like terms: 1.53622915 + -1.4 = 0.13622915 t = 0.13622915 Simplifying t = 0.13622915

Subproblem 2

t + 1.4 = -1.53622915 Simplifying t + 1.4 = -1.53622915 Reorder the terms: 1.4 + t = -1.53622915 Solving 1.4 + t = -1.53622915 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 = -1.53622915 + -1.4 Combine like terms: 1.4 + -1.4 = 0.0 0.0 + t = -1.53622915 + -1.4 t = -1.53622915 + -1.4 Combine like terms: -1.53622915 + -1.4 = -2.93622915 t = -2.93622915 Simplifying t = -2.93622915

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.13622915, -2.93622915}

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