Question

Oblicz

1. |x|=6½

2. 3|x|-1=7

3. |x|≥2

4. (2⁻⁴-2⁻³)⁻¹

Answer 1

1. -6.5 , 6.5

2.3(x)=7+1

3(x)=8/3

(x)=2 2/3                ()-wartość bezwzględna

x= 2 2/3 lub -2 2/3

3. x∈(-∞; -2) lub (2;∞)

4.( (¼)⁴ - (½)³)-₁=

(1/16-1/8)-₁=

(1/16)-₁=

(16)¹=16