5d^2-14d-3=0

Solution for 5d^2-14d-3=0 equation:

Simplifying
5d2 + -14d + -3 = 0

Reorder the terms:
-3 + -14d + 5d2 = 0

Solving
-3 + -14d + 5d2 = 0

Solving for variable 'd'.

Factor a trinomial.
(-1 + -5d)(3 + -1d) = 0

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

Simplifying
-1 + -5d = 0

Solving
-1 + -5d = 0

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

Add '1' to each side of the equation.
-1 + 1 + -5d = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -5d = 0 + 1
-5d = 0 + 1

Combine like terms: 0 + 1 = 1
-5d = 1

Divide each side by '-5'.
d = -0.2

Simplifying
d = -0.2
Subproblem 2
Set the factor '(3 + -1d)' equal to zero and attempt to solve:

Simplifying
3 + -1d = 0

Solving
3 + -1d = 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 + -1d = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -1d = 0 + -3
-1d = 0 + -3

Combine like terms: 0 + -3 = -3
-1d = -3

Divide each side by '-1'.
d = 3

Simplifying
d = 3
Solution
d = {-0.2, 3}