Question

repedeeeeeeeeeeeeeeeee

Answer 1

Răspuns:

Explicație pas cu pas:

/- fractia...

II.

1. 6/√3 = 6√3/3 = 2√3

2. 45/√75 = 45/5√3 = 9/√3 = 3√3

3. 2 / √5-√3 = 2(√5+√3)/(5-3) = 2(√5+√3)/2 =

√5+√3.

4. 5 / 4√3+3√2 = 5(4√3-3√2)/(16×3)-(9×2) =

= 5(4√3-3√2)/30 = 4√3-3√2 / 6.

III.

1. a) √32-√50+√8-√98+√242 = 4√2-5√2+2√2-7√2+11√2 = 5√2

b)(10√6)•(3√15):(15√10) = (10√3×√15)/5√5 =

= 2√3×√3 = 2×3 = 6