Question

1. (2√3 - 1)²- ( √3+2)² =

2. ¾x < 3/2

Błagam na jutro !!!

Answer 1

1]

(2√3-1)²-(√3+2)²=

12-4√3+1-3-4√3-4=

6-8√3

2]

¾x<3/2

x<3/2:¾

x<3/2*4/3

x<2

 

x∈(-∞,2)

Answer 2

1.  (2√3 - 1)² - (√3 + 2)² = 12 - 4√3 + 1 - (3 + 4√3 + 4) = 12 - 4√3 + 1 - 3 - 4√3 - 4 = 6 - 8√3

 

2.

3/4x < 3/2   /*4

3x < 6    /:3

x < 2

 

odp. x ∈ (-oo, 2)