Simplify :
0.768 x 0.768 - 2 x 0.768 x 0.568 + 0.568 x 0.568
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0.768 * 0.768 - 2 * 0.768 * 0.568 + 0.568 * 0.568
= ( 0.768 )^2 - 2 * 0.768 * 0.568 + ( 0.568 )^2
Using identity { a^2 - 2 ab + b^2 = ( a - b )^2 }
= ( 0.768 - 0.568 )^2
= ( 0.2 )^2
= 0.04.
The answer is 0.04
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