Odpowiedź:
[tex]a)\ \ |20-|7+18||=|20-|25||=|20-25|=|-5|=5\\\\b)\ \ |3-5|\cdot|7+8|=|-2|\cdot|15|=2\cdot15=30\\\\c)\ \ |2-\sqrt{5}|=-(2-\sqrt{5})=-2+\sqrt{5}\\\\d)\ \ |3+\sqrt{2}|=3+\sqrt{2}[/tex]
a)
I20 - I7 + 18I = I20 - 25I = I-5I = 5
b)
I3 - 5I * I7 + 8I = I-2I * I15I = 2 * 15 = 30
c)
I2 - √5I ≈ I2 - 2,2I = I-0,2I = 0,2
d)
I3 + √2I ≈ I3 + 1,4I = I4,4I = 4,4
Szczegółowe wyjaśnienie:
