5t^2=3t+28

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Solution for 5t^2=3t+28 equation:


Simplifying
5t2 = 3t + 28

Reorder the terms:
5t2 = 28 + 3t

Solving
5t2 = 28 + 3t

Solving for variable 't'.

Reorder the terms:
-28 + -3t + 5t2 = 28 + 3t + -28 + -3t

Reorder the terms:
-28 + -3t + 5t2 = 28 + -28 + 3t + -3t

Combine like terms: 28 + -28 = 0
-28 + -3t + 5t2 = 0 + 3t + -3t
-28 + -3t + 5t2 = 3t + -3t

Combine like terms: 3t + -3t = 0
-28 + -3t + 5t2 = 0

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

Divide each side by '5'.
-5.6 + -0.6t + t2 = 0

Move the constant term to the right:

Add '5.6' to each side of the equation.
-5.6 + -0.6t + 5.6 + t2 = 0 + 5.6

Reorder the terms:
-5.6 + 5.6 + -0.6t + t2 = 0 + 5.6

Combine like terms: -5.6 + 5.6 = 0.0
0.0 + -0.6t + t2 = 0 + 5.6
-0.6t + t2 = 0 + 5.6

Combine like terms: 0 + 5.6 = 5.6
-0.6t + t2 = 5.6

The t term is -0.6t.  Take half its coefficient (-0.3).
Square it (0.09) and add it to both sides.

Add '0.09' to each side of the equation.
-0.6t + 0.09 + t2 = 5.6 + 0.09

Reorder the terms:
0.09 + -0.6t + t2 = 5.6 + 0.09

Combine like terms: 5.6 + 0.09 = 5.69
0.09 + -0.6t + t2 = 5.69

Factor a perfect square on the left side:
(t + -0.3)(t + -0.3) = 5.69

Calculate the square root of the right side: 2.385372088

Break this problem into two subproblems by setting 
(t + -0.3) equal to 2.385372088 and -2.385372088.

Subproblem 1

t + -0.3 = 2.385372088 Simplifying t + -0.3 = 2.385372088 Reorder the terms: -0.3 + t = 2.385372088 Solving -0.3 + t = 2.385372088 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.3' to each side of the equation. -0.3 + 0.3 + t = 2.385372088 + 0.3 Combine like terms: -0.3 + 0.3 = 0.0 0.0 + t = 2.385372088 + 0.3 t = 2.385372088 + 0.3 Combine like terms: 2.385372088 + 0.3 = 2.685372088 t = 2.685372088 Simplifying t = 2.685372088

Subproblem 2

t + -0.3 = -2.385372088 Simplifying t + -0.3 = -2.385372088 Reorder the terms: -0.3 + t = -2.385372088 Solving -0.3 + t = -2.385372088 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.3' to each side of the equation. -0.3 + 0.3 + t = -2.385372088 + 0.3 Combine like terms: -0.3 + 0.3 = 0.0 0.0 + t = -2.385372088 + 0.3 t = -2.385372088 + 0.3 Combine like terms: -2.385372088 + 0.3 = -2.085372088 t = -2.085372088 Simplifying t = -2.085372088

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2.685372088, -2.085372088}

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