2. рис 1.
3. (5⁰ * 25⁻⁷)/(125⁻⁶ * 5¹) = 5⁻¹⁴/(5⁻¹⁸ * 5) = 5⁻¹⁴/5⁻¹⁷ = 5³ = 125
4. 8.3 * 10³ > 7.8 * 10³
1.3 * 10⁻³ < 1.3 * 10⁻²
6.3 * 10⁵ > 6.8 * 10⁻⁵
<span>3(7x-5)-<span>(17x+4)=17</span></span>
D1=0 то x1=x2=-R/a....D=0 то x1=x2=-B/2a
<span>10a</span>²<span>+a-7+2a-a</span>²<span>-3a+3=9а</span>²-4
при а=1/3 9*1/9-4=1-4=-3