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Simplifying
80d2 = 1.89
Solving
80d2 = 1.89
Solving for variable 'd'.
Move all terms containing d to the left, all other terms to the right.
Divide each side by '80'.
d2 = 0.023625
Simplifying
d2 = 0.023625
Take the square root of each side:
d = {-0.153704261, 0.153704261}
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