Question

упростите
7a(a-b)-b(b-7a)=
3x(x-2a)-6a(a-x)=
(y^2z^8)^5=

(3^7*5^5)^4
__________ =
(5^4*3^6)^5

28t^5u^7
_______=
-7t^6u^5

Answer 1

7а2-7аб-б2+7аб=7а2-б2

Answer 2

3х2-6ах-6а2+6ах=3х2-6а2