October 2018 1 13 Report

Znajdź i popraw błędy :

√98 +√72 = 2√7 + 2√6

( ½ √2 + ¼ √2)² = [2(1+ ½ )] ² = ¼ *2 * (1+ ½ )² = ½ * 9/4 = 9/8

√2( √8 + ¼ √50 ) = √2(2 √2 + 5√2 ) = √2 * √7*2 = √7*2*2 = 2√7


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