October 2018 1 25 Report

zad.1

Wyznacz (A \cap B)\C jeżeli A=( 0,1,4,8,9) B=(2,4,6,7,9) C=(1,2,3,4)

a) (4,9)

b)(9)

c)(0,1,2,3,4,6,7,8,9)

d)(o,6,7,8,9)

zad.2

Sprowadź do najprostszej postaci \sqrt{45-20\sqrt{5}}

a)5-2\sqrt{5}

b)2\sqrt{5} +5

c)20\sqrt{5} -45

d)45-20\sqrt{5}

zad.3

Suma dwóch liczb wynosi \sqrt{10} natomiast ich różnica \sqrt{5}. Ile wynosi ich iloczyn?


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