1.
2 ¹/₂ + ¹/₇ * 3.5 = ⁵/₂ + ¹/₇ * ⁷/₂ = ⁵/₂ + ¹/₂ =⁶/₂ =3
2.
(4*10⁻⁶)(2.2*10³)=4*2.2*10⁻⁶*10³ =8.8*10⁻³ =0.0088
1.
(⁷/₈ - ¹⁷/₁₂) : ⁵/₁₂ = (7*3 - 17*2) * 12 = (21 -34) * 12 = -13 * 12 =
24 5 24 5 24 5
= -13 * 1 = -13 = -1,3
2 5 10
2. 4¹⁰ = (2²)¹⁰ = 2²⁰⁻¹¹ = 2⁹ =512
2¹¹ 2¹¹