15t^2=-16t+175

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Solution for 15t^2=-16t+175 equation:


Simplifying
15t2 = -16t + 175

Reorder the terms:
15t2 = 175 + -16t

Solving
15t2 = 175 + -16t

Solving for variable 't'.

Reorder the terms:
-175 + 16t + 15t2 = 175 + -16t + -175 + 16t

Reorder the terms:
-175 + 16t + 15t2 = 175 + -175 + -16t + 16t

Combine like terms: 175 + -175 = 0
-175 + 16t + 15t2 = 0 + -16t + 16t
-175 + 16t + 15t2 = -16t + 16t

Combine like terms: -16t + 16t = 0
-175 + 16t + 15t2 = 0

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

Divide each side by '15'.
-11.66666667 + 1.066666667t + t2 = 0

Move the constant term to the right:

Add '11.66666667' to each side of the equation.
-11.66666667 + 1.066666667t + 11.66666667 + t2 = 0 + 11.66666667

Reorder the terms:
-11.66666667 + 11.66666667 + 1.066666667t + t2 = 0 + 11.66666667

Combine like terms: -11.66666667 + 11.66666667 = 0.00000000
0.00000000 + 1.066666667t + t2 = 0 + 11.66666667
1.066666667t + t2 = 0 + 11.66666667

Combine like terms: 0 + 11.66666667 = 11.66666667
1.066666667t + t2 = 11.66666667

The t term is 1.066666667t.  Take half its coefficient (0.5333333335).
Square it (0.2844444446) and add it to both sides.

Add '0.2844444446' to each side of the equation.
1.066666667t + 0.2844444446 + t2 = 11.66666667 + 0.2844444446

Reorder the terms:
0.2844444446 + 1.066666667t + t2 = 11.66666667 + 0.2844444446

Combine like terms: 11.66666667 + 0.2844444446 = 11.9511111146
0.2844444446 + 1.066666667t + t2 = 11.9511111146

Factor a perfect square on the left side:
(t + 0.5333333335)(t + 0.5333333335) = 11.9511111146

Calculate the square root of the right side: 3.45703791

Break this problem into two subproblems by setting 
(t + 0.5333333335) equal to 3.45703791 and -3.45703791.

Subproblem 1

t + 0.5333333335 = 3.45703791 Simplifying t + 0.5333333335 = 3.45703791 Reorder the terms: 0.5333333335 + t = 3.45703791 Solving 0.5333333335 + t = 3.45703791 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.5333333335' to each side of the equation. 0.5333333335 + -0.5333333335 + t = 3.45703791 + -0.5333333335 Combine like terms: 0.5333333335 + -0.5333333335 = 0.0000000000 0.0000000000 + t = 3.45703791 + -0.5333333335 t = 3.45703791 + -0.5333333335 Combine like terms: 3.45703791 + -0.5333333335 = 2.9237045765 t = 2.9237045765 Simplifying t = 2.9237045765

Subproblem 2

t + 0.5333333335 = -3.45703791 Simplifying t + 0.5333333335 = -3.45703791 Reorder the terms: 0.5333333335 + t = -3.45703791 Solving 0.5333333335 + t = -3.45703791 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.5333333335' to each side of the equation. 0.5333333335 + -0.5333333335 + t = -3.45703791 + -0.5333333335 Combine like terms: 0.5333333335 + -0.5333333335 = 0.0000000000 0.0000000000 + t = -3.45703791 + -0.5333333335 t = -3.45703791 + -0.5333333335 Combine like terms: -3.45703791 + -0.5333333335 = -3.9903712435 t = -3.9903712435 Simplifying t = -3.9903712435

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2.9237045765, -3.9903712435}

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