Evaluate
\left(\left(r-4\right)\left(r-2\right)\right)^{2}
Expand
r^{4}-12r^{3}+52r^{2}-96r+64
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r^{4}-12r^{3}+52r^{2}-96r+64
Square r^{2}-6r+8.
r^{4}-12r^{3}+52r^{2}-96r+64
Square r^{2}-6r+8.
Examples
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