Question

preciso de ajudaa ainda hoje 7 Pts​

Answer 1

6) a) 1/√5 = 1/√5 . √5/√5 = √5/5

b) 8√2 /√6 = 8√2/√6 . √6/√6 = 8√12/6

12 I 2

6 I 2

3 I 3

1 I 1

√12 = 2√3

8. 2√3/6 = 16√3/6 (simplifica por 2)

8√3/ 3

c) 2/√3 -√2 = 2/ √3 -√2 . √3 -√2/ √3 -√2

2 (√3 -√2) = 2√3 - 2√2

(√3 - √2) . (√3 - √2) = 3 - √6 - √6 +2 = 5 -2√6

2√3 - 2√2 / 5 - 2√6

d) 3 / 2 +√3 = 3 / 2 +√3 . 2 +√3/ 2 +√3

3 (2 +√3) = 6 +3√3

(2 +√3) . (2 +√3) = 4 + 2√3 + 2√3 + 3 = 7 + 4√3

6+ 3√3 / 7 +4√3

7) 2√2 (1 + √18)

2 √2 + 2√36

2 √2 +2.6

2 √2 +12

8) a) a = 1 b = -5 c=2

b) a = 2 b= 3 c= 6

c) a = 2 b= -1 c=0

d) a = 1 b= 0 c= -9