Question

1.Oblicz:

a).-∛0,004+∛32=......................

b).∛40+∛5000=........................

c).∛128-∛54=..........................

d).-√75+√27=...........................

2.Usuń niewymierności:

3√2/√6

2-4√5/3√5

-7/√3

/-oznacza dzielenie(kreska ułamkowa)

Daje naj

Answer 1

1.

a) = -∛ 0,001 * 4 + ∛8*4 = -0,1 ∛4 + 2 ∛4 = 1,0 ∛4

b) =∛8*5 + ∛5*1000 = 2 ∛5 + 10∛5 = 12 ∛5

c) = ∛64 * 2 - ∛27 * 2 = 4∛2 - 3∛2 = ∛2

d) = -√25*3 + √9*3 = -5√3 + 3√3 = -2√3

 

2.

= 3√2 * √6 / √6*√6 = 3√12 / 6 = 3 √4*3 / 6 = 3*2√3 / 6 = √3

= 2-4√5 * 3√5 / 3√5 * 3√5 = 6√5 - 12*5 / 9*5 = 2√5 - 4 = 2√5 - 4

= -7*√3 / √3 * √3 = -7√3 / 3