Ответы на вопрос:
ответ:
7) gave
8) are you been
9) never enjoyed
10) did you hear
11) was working
12) is doing
13) invented
(*´﹀`*)
6) have discovered
7) gave
8) have you been
9) have never enjoyed
10) did you hear
11) has been working
12) is doing
13) have invented
А)-2,4а^3b^2-0,9a^2b^3 б)3x^2-6ax-6a^2+6ax=3x^2-6a^2 в)3а^2-2а+1 а)7+4х-8-3х+3=0 х+2=0 х= -2 б)2х-21х+7=26 -19х=26-7 -19х=19 |÷(-19) х= -1 в)-4х+2=2 -4х=2-2 -4х=0 |÷(-4) х=0
Have you made tea or coffee ? -yes,i have when did you last do it ? i did it in the morning
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