<span>(2uy^4n^2)^8=256u^8y^32n^16
(r^4t^2)^4=r^16t^8
(3k^4t^2z^3)^5=243k^20t^10z^15
(4g^3e)^3=64g^9e^3</span>
(7x+2y)² - (3x-y)(4x+5y)=49x²+28xy+4y² - 12х²-15ху+4ху+5у²=37х² +17ху+9у²
.
(7х+2у)² -(3у-у)(4х+5у)=49x²+28xy+4y² - 8ху -15у²=49х²+20ху -11у²
(это по написанному заданию)
1) [6;10]
-----®--------------------®----- >
6 xxxxxxxxxxxxx 10
2) [-5;-1]
------®--------®---------------------- >
-5 xxxx -1
3) [-9;3)
-----®-------------------------o---------- >
-9 xxxxxxxxxxxxxxxx 3
4 (-1;7]
----------------o----------------------------®------ >
-1 xxxxxxxxxxxxxxxxxx 7
5) (-∞;15)
-------------o----------------------------------- >
Xxxxxxxxx 15
6) (8;+∞)
---------------------------o-------------------------- >
8 xxxxxxxxxxxxxxxxx
7) (-∞; 2]
--------------------------®--------------------------- >
Xxxxxxxxxxxxxxxxxx 2
8) [-3;+∞)
----------------------------------®------------------------------- >
-3 xxxxxxxxxxxxxxxxxxxx
А=1, b=2a !! c=9. задание ж с параметром.
Не решу,реши лучше пофизре