How can I add grouping symbols to make 5^2-4^2+5-4^2 = 4?

How can I add grouping symbols to make 5^2-4^2+5-4^2 = 4?
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Equating 5^2-4^2+5-4^2 to 5²-4²+5-4², I get 5²-(4²+5)=4, but I can’t find a grouping to include the final 4² and still get 4 as the result.

These don’t work either: 5²-(4²+5-4²)=20; 5²-4²+(5-4)²=10; 5²-(4²+(5-4)²)=8; 5²-(4²⁺⁵⁻⁴)²=-4071; ...

Sorry, I don’t think it’s possible.

 

by Top Rated User (1.2m points)

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