1. Kwadrat liczby -1 1/5 to: A. -2 2/5 B. 1 11/25 C. 1 1/25 D. -1 11/25 2. Oblicz kwadrat liczby -1 2/3.
( -1 1/5)² = (-6/5)² = 36/25 = 1 11/25 b)
(-1i1/5)^2 = (-6/5)^2 = 36/25 = 1i11/25
odp. B. 1i11/25
(-1i2/3)^2 = (-5/3)^2 = (-5/3) *(-5/3)= 25/9 = 2i7/9
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( -1 1/5)² = (-6/5)² = 36/25 = 1 11/25 b)
(-1i1/5)^2 = (-6/5)^2 = 36/25 = 1i11/25
odp. B. 1i11/25
(-1i2/3)^2 = (-5/3)^2 = (-5/3) *(-5/3)= 25/9 = 2i7/9