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Simplifying
(8 + -16d)(8 + 16d) = 0
Multiply (8 + -16d) * (8 + 16d)
(8(8 + 16d) + -16d * (8 + 16d)) = 0
((8 * 8 + 16d * 8) + -16d * (8 + 16d)) = 0
((64 + 128d) + -16d * (8 + 16d)) = 0
(64 + 128d + (8 * -16d + 16d * -16d)) = 0
(64 + 128d + (-128d + -256d2)) = 0
Combine like terms: 128d + -128d = 0
(64 + 0 + -256d2) = 0
(64 + -256d2) = 0
Solving
64 + -256d2 = 0
Solving for variable 'd'.
Move all terms containing d to the left, all other terms to the right.
Add '-64' to each side of the equation.
64 + -64 + -256d2 = 0 + -64
Combine like terms: 64 + -64 = 0
0 + -256d2 = 0 + -64
-256d2 = 0 + -64
Combine like terms: 0 + -64 = -64
-256d2 = -64
Divide each side by '-256'.
d2 = 0.25
Simplifying
d2 = 0.25
Take the square root of each side:
d = {-0.5, 0.5}
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