d^2-15d+14=0

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

Simplifying
d2 + -15d + 14 = 0

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

Solving
14 + -15d + d2 = 0

Solving for variable 'd'.

Factor a trinomial.
(1 + -1d)(14 + -1d) = 0

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

Simplifying
1 + -1d = 0

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

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

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

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

Simplifying
d = 1
Subproblem 2
Set the factor '(14 + -1d)' equal to zero and attempt to solve:

Simplifying
14 + -1d = 0

Solving
14 + -1d = 0

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

Add '-14' to each side of the equation.
14 + -14 + -1d = 0 + -14

Combine like terms: 14 + -14 = 0
0 + -1d = 0 + -14
-1d = 0 + -14

Combine like terms: 0 + -14 = -14
-1d = -14

Divide each side by '-1'.
d = 14

Simplifying
d = 14
Solution
d = {1, 14}