16d^2-14d-15=0

Solution for 16d^2-14d-15=0 equation:

Simplifying
16d2 + -14d + -15 = 0

Reorder the terms:
-15 + -14d + 16d2 = 0

Solving
-15 + -14d + 16d2 = 0

Solving for variable 'd'.

Factor a trinomial.
(-5 + -8d)(3 + -2d) = 0

Subproblem 1
Set the factor '(-5 + -8d)' equal to zero and attempt to solve:

Simplifying
-5 + -8d = 0

Solving
-5 + -8d = 0

Move all terms containing d to the left, all other terms to the right.

Add '5' to each side of the equation.
-5 + 5 + -8d = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -8d = 0 + 5
-8d = 0 + 5

Combine like terms: 0 + 5 = 5
-8d = 5

Divide each side by '-8'.
d = -0.625

Simplifying
d = -0.625
Subproblem 2
Set the factor '(3 + -2d)' equal to zero and attempt to solve:

Simplifying
3 + -2d = 0

Solving
3 + -2d = 0

Move all terms containing d to the left, all other terms to the right.

Add '-3' to each side of the equation.
3 + -3 + -2d = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -2d = 0 + -3
-2d = 0 + -3

Combine like terms: 0 + -3 = -3
-2d = -3

Divide each side by '-2'.
d = 1.5

Simplifying
d = 1.5
Solution
d = {-0.625, 1.5}