Ответ учителя по предмету Математика
Многочлен — сумма одночленов. Одночлен — произведение чисел и переменных(аргументов).
а) (2b+c)-2c^2=-2c^2+2b+c
б) (1-3r)(1+3r)-r^2=1-9r^2-r^2=-10r^2+1
c) (a-1)(a+1)+a(a-2)=a^2-1+a^2-2a=2a^2-2a-1
г) (2x-y)(y+2x)+x(4-3x)=4x^2-y^2+4x-3x^2=x^2-y^2+4x
д) 2b(c-b)(c+b)=2b(c^2-b^2)=-2b^3+2(b^2)c
e) 3a(1+b)(b-1)=3a(b^2-1)=3(b^2)a-3a. 😉
Похожие вопросы от пользователей
You: Hello, Martin. Welcome to our programme «Pl….. games!»
Martin: Thanks. I’m happy to be here.
You: What g…….. do you like to ……… with your students?
Martin: We like …….. p…… ball games and t…… games.
You: Great! What ball games do you …… to play?
Martin: The girls like ……… play volleyball and basketball, the boys …. football.
You: Well. What about t….. games?
Martin: My students like ….. play chess and checkers, they lik to do p….. . And the girls like to s…. very much.