(√7 - √2 )² - (2-√7)(2-√7) + √2 ( 2 + √7 )
Proszę o rozwiązanie
[√7-√2]²-[2-√7][2-√7]+√2[2+√7]=
7-2√14+2-[2-√7)²+2√2+√14=
9-√14+2√2-4+4√7-7=
-2-√14+2√2+4√7
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[√7-√2]²-[2-√7][2-√7]+√2[2+√7]=
7-2√14+2-[2-√7)²+2√2+√14=
9-√14+2√2-4+4√7-7=
-2-√14+2√2+4√7