9-х^2. =(3-х)(3+х) /х(х+3)=(3-х) / х
_______
Х^2+3х.
<span>а)
(12a</span>⁸b⁶ + 60a⁶b⁸)/4 a⁵b⁵ = 12a⁸b⁶/4a⁵b⁵ + 60a⁶b⁸/4a⁵b⁵ = 3a³b + 15ab³<span>;
б)
(132n</span>³p² - 44n²p³ + 110n²p⁴<span>)/22np =
= </span>132n³p²/22np - 44n²p³/22np + 110n²p⁴/22np
= 6n²p - 2np² + 5np³<span>
в)
(15a</span>⁷x⁹ - 45a⁹x⁷)/5a⁶x⁶<span> =
= </span>15a⁷x⁹/5a⁶x⁶ - 45a⁹x⁷/5a⁶x⁶ =
= 3ax³ - 9a³x<span>
г)
(108k</span>⁴n² - 144k³n³ - 180k²n⁴<span>)/36kn =
= </span>108k⁴n²/36kn - 144k³n³/36kn - 180k²n⁴/36kn =
= 3k³n - 4k²n² - 5kn³
4\2√3+1 -4\2√3-1=4*(1\2√3+1-1\2√3-1)=4*(2√3-1-(2√3+1)\(2√3+1)*(2√3-1))=4*((-1-1\(4*3+2√3-2√3-1))=4*(-2\12-1)=4*(-2\11)=(-8\11)
1. y=x^2-2 2. y=x^2-4......
0.5 (0.5+4)-2×0,5
0,25+2-1=1,25