100=.16d^2

Solution for 100=.16d^2 equation:

Simplifying
100 = 0.16d2

Solving
100 = 0.16d2

Solving for variable 'd'.

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

Add '-0.16d2' to each side of the equation.
100 + -0.16d2 = 0.16d2 + -0.16d2

Combine like terms: 0.16d2 + -0.16d2 = 0.00
100 + -0.16d2 = 0.00

Add '-100' to each side of the equation.
100 + -100 + -0.16d2 = 0.00 + -100

Combine like terms: 100 + -100 = 0
0 + -0.16d2 = 0.00 + -100
-0.16d2 = 0.00 + -100

Combine like terms: 0.00 + -100 = -100
-0.16d2 = -100

Divide each side by '-0.16'.
d2 = 625

Simplifying
d2 = 625

Take the square root of each side:
d = {-25, 25}