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\left(\sqrt{64n^{2}}\right)^{2}=\left(\sqrt{8n^{2}}\right)^{2}
Square both sides of the equation.
64n^{2}=\left(\sqrt{8n^{2}}\right)^{2}
Calculate \sqrt{64n^{2}} to the power of 2 and get 64n^{2}.
64n^{2}=8n^{2}
Calculate \sqrt{8n^{2}} to the power of 2 and get 8n^{2}.
64n^{2}-8n^{2}=0
Subtract 8n^{2} from both sides.
56n^{2}=0
Combine 64n^{2} and -8n^{2} to get 56n^{2}.
n^{2}=0
Divide both sides by 56. Zero divided by any non-zero number gives zero.
n=0 n=0
Take the square root of both sides of the equation.
n=0
The equation is now solved. Solutions are the same.
\sqrt{64\times 0^{2}}=\sqrt{8\times 0^{2}}
Substitute 0 for n in the equation \sqrt{64n^{2}}=\sqrt{8n^{2}}.
0=0
Simplify. The value n=0 satisfies the equation.
n=0
Equation \sqrt{64n^{2}}=\sqrt{8n^{2}} has a unique solution.