-16t^2-15t+15=6

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Solution for -16t^2-15t+15=6 equation:


Simplifying
-16t2 + -15t + 15 = 6

Reorder the terms:
15 + -15t + -16t2 = 6

Solving
15 + -15t + -16t2 = 6

Solving for variable 't'.

Reorder the terms:
15 + -6 + -15t + -16t2 = 6 + -6

Combine like terms: 15 + -6 = 9
9 + -15t + -16t2 = 6 + -6

Combine like terms: 6 + -6 = 0
9 + -15t + -16t2 = 0

Begin completing the square.  Divide all terms by
-16 the coefficient of the squared term: 

Divide each side by '-16'.
-0.5625 + 0.9375t + t2 = 0

Move the constant term to the right:

Add '0.5625' to each side of the equation.
-0.5625 + 0.9375t + 0.5625 + t2 = 0 + 0.5625

Reorder the terms:
-0.5625 + 0.5625 + 0.9375t + t2 = 0 + 0.5625

Combine like terms: -0.5625 + 0.5625 = 0.0000
0.0000 + 0.9375t + t2 = 0 + 0.5625
0.9375t + t2 = 0 + 0.5625

Combine like terms: 0 + 0.5625 = 0.5625
0.9375t + t2 = 0.5625

The t term is 0.9375t.  Take half its coefficient (0.46875).
Square it (0.2197265625) and add it to both sides.

Add '0.2197265625' to each side of the equation.
0.9375t + 0.2197265625 + t2 = 0.5625 + 0.2197265625

Reorder the terms:
0.2197265625 + 0.9375t + t2 = 0.5625 + 0.2197265625

Combine like terms: 0.5625 + 0.2197265625 = 0.7822265625
0.2197265625 + 0.9375t + t2 = 0.7822265625

Factor a perfect square on the left side:
(t + 0.46875)(t + 0.46875) = 0.7822265625

Calculate the square root of the right side: 0.884435731

Break this problem into two subproblems by setting 
(t + 0.46875) equal to 0.884435731 and -0.884435731.

Subproblem 1

t + 0.46875 = 0.884435731 Simplifying t + 0.46875 = 0.884435731 Reorder the terms: 0.46875 + t = 0.884435731 Solving 0.46875 + t = 0.884435731 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.46875' to each side of the equation. 0.46875 + -0.46875 + t = 0.884435731 + -0.46875 Combine like terms: 0.46875 + -0.46875 = 0.00000 0.00000 + t = 0.884435731 + -0.46875 t = 0.884435731 + -0.46875 Combine like terms: 0.884435731 + -0.46875 = 0.415685731 t = 0.415685731 Simplifying t = 0.415685731

Subproblem 2

t + 0.46875 = -0.884435731 Simplifying t + 0.46875 = -0.884435731 Reorder the terms: 0.46875 + t = -0.884435731 Solving 0.46875 + t = -0.884435731 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.46875' to each side of the equation. 0.46875 + -0.46875 + t = -0.884435731 + -0.46875 Combine like terms: 0.46875 + -0.46875 = 0.00000 0.00000 + t = -0.884435731 + -0.46875 t = -0.884435731 + -0.46875 Combine like terms: -0.884435731 + -0.46875 = -1.353185731 t = -1.353185731 Simplifying t = -1.353185731

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.415685731, -1.353185731}

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