Solve for D
D=B\left(16-B\right)
Solve for B (complex solution)
B=-\sqrt{64-D}+8
B=\sqrt{64-D}+8
Solve for B
B=-\sqrt{64-D}+8
B=\sqrt{64-D}+8\text{, }D\leq 64
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16B=D+B^{2}
Multiply B and B to get B^{2}.
D+B^{2}=16B
Swap sides so that all variable terms are on the left hand side.
D=16B-B^{2}
Subtract B^{2} from both sides.
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