-0.07t^2+0.84t+1.5=0

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Solution for -0.07t^2+0.84t+1.5=0 equation:


Simplifying
-0.07t2 + 0.84t + 1.5 = 0

Reorder the terms:
1.5 + 0.84t + -0.07t2 = 0

Solving
1.5 + 0.84t + -0.07t2 = 0

Solving for variable 't'.

Begin completing the square.  Divide all terms by
-0.07 the coefficient of the squared term: 

Divide each side by '-0.07'.
-21.42857143 + -12t + t2 = 0

Move the constant term to the right:

Add '21.42857143' to each side of the equation.
-21.42857143 + -12t + 21.42857143 + t2 = 0 + 21.42857143

Reorder the terms:
-21.42857143 + 21.42857143 + -12t + t2 = 0 + 21.42857143

Combine like terms: -21.42857143 + 21.42857143 = 0.00000000
0.00000000 + -12t + t2 = 0 + 21.42857143
-12t + t2 = 0 + 21.42857143

Combine like terms: 0 + 21.42857143 = 21.42857143
-12t + t2 = 21.42857143

The t term is -12t.  Take half its coefficient (-6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
-12t + 36 + t2 = 21.42857143 + 36

Reorder the terms:
36 + -12t + t2 = 21.42857143 + 36

Combine like terms: 21.42857143 + 36 = 57.42857143
36 + -12t + t2 = 57.42857143

Factor a perfect square on the left side:
(t + -6)(t + -6) = 57.42857143

Calculate the square root of the right side: 7.57816412

Break this problem into two subproblems by setting 
(t + -6) equal to 7.57816412 and -7.57816412.

Subproblem 1

t + -6 = 7.57816412 Simplifying t + -6 = 7.57816412 Reorder the terms: -6 + t = 7.57816412 Solving -6 + t = 7.57816412 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + t = 7.57816412 + 6 Combine like terms: -6 + 6 = 0 0 + t = 7.57816412 + 6 t = 7.57816412 + 6 Combine like terms: 7.57816412 + 6 = 13.57816412 t = 13.57816412 Simplifying t = 13.57816412

Subproblem 2

t + -6 = -7.57816412 Simplifying t + -6 = -7.57816412 Reorder the terms: -6 + t = -7.57816412 Solving -6 + t = -7.57816412 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + t = -7.57816412 + 6 Combine like terms: -6 + 6 = 0 0 + t = -7.57816412 + 6 t = -7.57816412 + 6 Combine like terms: -7.57816412 + 6 = -1.57816412 t = -1.57816412 Simplifying t = -1.57816412

Solution

The solution to the problem is based on the solutions from the subproblems. t = {13.57816412, -1.57816412}

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