.375t^2+6t-120=0

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Solution for .375t^2+6t-120=0 equation:


Simplifying
0.375t2 + 6t + -120 = 0

Reorder the terms:
-120 + 6t + 0.375t2 = 0

Solving
-120 + 6t + 0.375t2 = 0

Solving for variable 't'.

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

Divide each side by '0.375'.
-320 + 16t + t2 = 0

Move the constant term to the right:

Add '320' to each side of the equation.
-320 + 16t + 320 + t2 = 0 + 320

Reorder the terms:
-320 + 320 + 16t + t2 = 0 + 320

Combine like terms: -320 + 320 = 0
0 + 16t + t2 = 0 + 320
16t + t2 = 0 + 320

Combine like terms: 0 + 320 = 320
16t + t2 = 320

The t term is 16t.  Take half its coefficient (8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
16t + 64 + t2 = 320 + 64

Reorder the terms:
64 + 16t + t2 = 320 + 64

Combine like terms: 320 + 64 = 384
64 + 16t + t2 = 384

Factor a perfect square on the left side:
(t + 8)(t + 8) = 384

Calculate the square root of the right side: 19.595917942

Break this problem into two subproblems by setting 
(t + 8) equal to 19.595917942 and -19.595917942.

Subproblem 1

t + 8 = 19.595917942 Simplifying t + 8 = 19.595917942 Reorder the terms: 8 + t = 19.595917942 Solving 8 + t = 19.595917942 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + t = 19.595917942 + -8 Combine like terms: 8 + -8 = 0 0 + t = 19.595917942 + -8 t = 19.595917942 + -8 Combine like terms: 19.595917942 + -8 = 11.595917942 t = 11.595917942 Simplifying t = 11.595917942

Subproblem 2

t + 8 = -19.595917942 Simplifying t + 8 = -19.595917942 Reorder the terms: 8 + t = -19.595917942 Solving 8 + t = -19.595917942 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + t = -19.595917942 + -8 Combine like terms: 8 + -8 = 0 0 + t = -19.595917942 + -8 t = -19.595917942 + -8 Combine like terms: -19.595917942 + -8 = -27.595917942 t = -27.595917942 Simplifying t = -27.595917942

Solution

The solution to the problem is based on the solutions from the subproblems. t = {11.595917942, -27.595917942}

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