-25=-24d-d^2

Solution for -25=-24d-d^2 equation:

Simplifying
-25 = -24d + -1d2

Solving
-25 = -24d + -1d2

Solving for variable 'd'.

Reorder the terms:
-25 + 24d + d2 = -24d + 24d + -1d2 + d2

Combine like terms: -24d + 24d = 0
-25 + 24d + d2 = 0 + -1d2 + d2
-25 + 24d + d2 = -1d2 + d2

Combine like terms: -1d2 + d2 = 0
-25 + 24d + d2 = 0

Factor a trinomial.
(-25 + -1d)(1 + -1d) = 0

Subproblem 1
Set the factor '(-25 + -1d)' equal to zero and attempt to solve:

Simplifying
-25 + -1d = 0

Solving
-25 + -1d = 0

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

Add '25' to each side of the equation.
-25 + 25 + -1d = 0 + 25

Combine like terms: -25 + 25 = 0
0 + -1d = 0 + 25
-1d = 0 + 25

Combine like terms: 0 + 25 = 25
-1d = 25

Divide each side by '-1'.
d = -25

Simplifying
d = -25
Subproblem 2
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
Solution
d = {-25, 1}