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(5√0,09-3√0,04) * (2√2¼-3√¼-7/9) = 5 √9/100 - 3√4/100 * (√2,25 * 2*2 - √0,25 *3*3 - 7/9)= (5 * 3/10 - 3*2/10)* √2,25*4*√2,25 - 7/9 = (15/10 - 6/10)* 2,25*4 - 7/9 = 9/10 * 9 - 7/9 = 9/10* 74/9 = 74/10 = 7 i 2/5
d
∛3⅜ * ∛ 0,125 : ( ∛64 : ∛8/27 ) = ∛27/8 * 0,5 : (4 : 2/3) = 3/2 * 1/2 : 2 = 3/4 : 2 =3/8
zada . 2 włącz czynniki pod znak pierwiastka .
a
5√7 = √5 * 5 * 7 = √175
⅔√27 = √2/3 * 2/3 * 27 = √4/3 * 27
0,2√15 = √0,2*0,2*15 = √0,6
3√ 1/18 = √3*3*1/18
b.
3∛2 = √2*3*3*3 = √54
0,6∛10 = √10*0,6*0,6*0,6 = √2,16
8∛1/256 = √8*8*8*1/256 = √512*1/256 = √2
½∛16 = √1/2*1/2*1/2*16 = √1/8*16 = √2
zad 3
Wykonaj obliczenia
a 3√5 -2 + √5 -2 = 4√5 - 4
b. 4∛2 -5 (2∛2 +1)= 4∛2 - 10∛2 - 5 = - 6∛2 - 5
c. √72 -√32 -3√8 = √9*8 -√4*8 - 3√8 = 3√8 - 2√8 - 3√8 = -2√8
d. 2∛24 +½(∛192 - ∛ 375)= ∛192 + 1/2 ∛192 - 1/2 ∛ 375 = 3/2192 - 1/2∛ 375