1)(3m+5n)-(9-(6m+2n-(12n-10m))-m-(7m-4n)
2)
15a²-(-4a+(5a-8a²-(2a²-a)+9a²)-3a)
Прошу помогите
2)
15a²-(-4a+(5a-8a²-(2a²-a)+9a²)-3a)
Прошу помогите
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Answers & Comments
3m+5n-(9-(6m+2n-12n+10m)-m-7m+4n= 9n-8m-(9-6m-2n+12n-10m)=
9n-8m-(9-19m+10n)=9n-8m-9+19m-10n=
11m-n-9
15a^2-(-4a+(5a-8a^2-2a^2+a+9a^2)-3a=
15a^2-(-4a+6a-a^2-3a)= 15a^2-(-a^2-a)=
16a^2+a