podstaw za a:
za b: (4+)
a) a*b
b)
c)
d)a
oblicz i wytłumacz!
a*b :
3√2*(4+3√2) = 12√2 + 18 = 6(2√2+3)
a/b :
3√2 4-3√2 12√2 - 18 6(2√2-3)
--------* ----------- = ----------------= ----------- = -3(2√2-3)
4+3√2 4-3√2 16 - 18 -2
1/a :
1 √2 √2
---- * ----- = ----------
3√2 √2 6
a² = (3√2)² = 3²*2 = 9*2=18
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a*b :
3√2*(4+3√2) = 12√2 + 18 = 6(2√2+3)
a/b :
3√2 4-3√2 12√2 - 18 6(2√2-3)
--------* ----------- = ----------------= ----------- = -3(2√2-3)
4+3√2 4-3√2 16 - 18 -2
1/a :
1 √2 √2
---- * ----- = ----------
3√2 √2 6
a² = (3√2)² = 3²*2 = 9*2=18