4√2*5*5 + 3,5√2*2*2*3*3 -40√2 =
= 4√2*5² +3,5√2³*3²-40√2 =
=4*5√2 +3,5*2*3√2 - 40√2 =
=20√2 + 21√2 - 40√2 =
= √2
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4√2*5*5 + 3,5√2*2*2*3*3 -40√2 =
= 4√2*5² +3,5√2³*3²-40√2 =
=4*5√2 +3,5*2*3√2 - 40√2 =
=20√2 + 21√2 - 40√2 =
= √2