Question

Va rog urgent, dau coroana!! ​

Answer 1

Răspuns:

Explicație pas cu pas:

6.

(3√2/2√3 + 2/√6) × √6

= (3√2√3/2√3√3 + 2√6/6) × √6

= (3√6/6 + √6/3) × √6

= (√6/2 + √6/3) × √6

= 6/2 + 6/3 = 18/6 + 12/6 = 30/6 = 5

7.

3 × (3,5 - 0,25 × 10) - (√5 - 2,5/√5) × √5

= 3 × (3,5 - 2,5) - (√5 - 25/10/√5) × √5

= 3 × 1 - (√5 - 5/2/√5) × √5

= 3 - (√5 - 5/2 × 1/√5) × √5

= 3 - (√5 - 5/2√5) × √5

= 3 - (√5 - 5√5/10) × √5

= 3 - (√5 - √5/2) × √5

= 3 - (2√5/2 - √5/2) × √5

= 3 - √5/2 × √5

= 3 - 5/2 = 6/2 - 5/2 = 1/2