Răspuns:
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a) √10 • (√10)³ = √10 • √10 = √100;
(√2)³ • (√2)⁵ = √2 • √2 = √4;
√3 • (√3)³ = √3 • √3 = √9 = 3
b) (-√5)⁴ : (-√5)² = (-√5)² = 5
(√6)⁹ : (√6)⁸ = √6
(√7)⁵ : (√7)³ = (√7)² = 7
c) nu mai știu
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