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√13²-12² = 13 - 144 = - 131
4∛8-√64 = 4 *2 - √4 * √16 = 8 - 2 * 4 = 8 - 8 = 0
∛9²-17-√4³ = 3 - 17 - 8 = -22
(-3)²÷√3²+4² = -27 : √3 *√9 + 16= -27 : 3√3 + 16 = -27/3√3 + 16
√16+√9-√16+9 = √4 * √4 + 3 - √4 * √4 + 9 = 4 + 3 - 4 + 9 = 12
zad 2
√√400÷5 = 200 ÷ 5 = 40
√√36+√100 = 6 + 10 = 16
zad 3
(2√7)² = 4 * 7 = 28
(3√3/2) ² = 9 *3/4 = 27/4 = 6,75
4√5² = 4 * 5 = 20
⅓√6*3√6 = 1 * 6 = 6
7∛5³ = 7 * 5 = 35
(2∛3)³ = 8 * 3 = 24
zad4
∛(5³)² = 25
√11*11³ = √14641
∛6*6²*6³ = 6 *6³ = 1296
zad 5
√2(√5+2√5) = √10 + 2√10 = 3√10
½∛9(∛3+5∛3) = 0,5 * 3 + 2,5 * 3 = 1,5 + 7,5 = 9
(½√2+¼√2 ) = 3/4√2