d^2-42d=0

Solution for d^2-42d=0 equation:

Simplifying
d2 + -42d = 0

Reorder the terms:
-42d + d2 = 0

Solving
-42d + d2 = 0

Solving for variable 'd'.

Factor out the Greatest Common Factor (GCF), 'd'.
d(-42 + d) = 0

Subproblem 1
Set the factor 'd' equal to zero and attempt to solve:

Simplifying
d = 0

Solving
d = 0

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

Simplifying
d = 0
Subproblem 2
Set the factor '(-42 + d)' equal to zero and attempt to solve:

Simplifying
-42 + d = 0

Solving
-42 + d = 0

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

Add '42' to each side of the equation.
-42 + 42 + d = 0 + 42

Combine like terms: -42 + 42 = 0
0 + d = 0 + 42
d = 0 + 42

Combine like terms: 0 + 42 = 42
d = 42

Simplifying
d = 42
Solution
d = {0, 42}