Предмет: Алгебра, автор: basibot

Напишите решение:Задания:1)Упростите выражение:(7-2x-x^2)-(x-2)(x+3);(3m^2+3n^2)
-(2m+n)(m+2n);u(u+v)-(v-1)(u-1). 2)Преобразуйте в многочлен:(x^2+1)(x^2+2);(3+b^3)(b^3-4);
(a^2-b^2)(a-b)^-этот знак означает степень.Помогите плиз,очень надо.)))

Ответы

Автор ответа: rima134
0
1)7-2x-x^2)-(x-2)(x+3)=7-2x-x^2-x^2-x+6=-2x^2-3x+13
2)(3m^2+3n^2)-(2m+n)(m+2n)=3m^2+3n^2-2m^2-5mn-2n^2=m^2-5mn+n^2
3)u(u+v)-(v-1)(u-1)=u^2++uv-uv+v+u-1=u^2+v+u-1
4)x^2+1)(x^2+2)=x^4+2x^2+x^2+2=x^4+3x^2+2
5)3+b^3)(b^3-4)=3b^3-12+b^6-4b^3=b^6-b^3-12
Автор ответа: basibot
0
Спс выручил
Автор ответа: basibot
0
помоги щас с алгеброй пожалуйста))))
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