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modenov04
@modenov04
June 2022
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Срочно!!!!!
1. Упростите выражение:
а) -3(2а + (1 - 4а(-а + 1))) - 2а(а - (-5 - а(-3а - 2))) - 2а(3а² - 5а - 4)
б) -2(а - (4 + 2а(а - 1))) - 3а(-а - (4 + а(-1- 2а))) - 6а(-а² + а + 1)
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1996sasha
а) -3(2а+(1-4а(-а+1)))-2а(а-(-5-а(-3а-2)))-2а(3а²-5а-4)= -3 (2a+(1+4a
²-4a))-2a(a-(-5+3a²+2a)-6a³+10a²+8a=-3(2a+1+4a²-4a)-2a(a+5-3a²-2a)-6a³+10a²+8a=-6a-3-12a²+12a-2a²-10a+6a³+4a²-6a³+10a²+8a=4a-3
б) -2(а -(4 + 2а(а - 1))) - 3а(-а - (4 + а(-1- 2а))) - 6а(-а² + а + 1)=
-2(а - (4 + 2а² - 2a)) - 3а(-а - (4 -а- 2а²))) + 6а³-6a²-6a=
-2(a-4-2a²+2a)-3a(-a-4+a+2a²)+6a³-6a²-6a=-2a+8+4a²-4a+3a²+12a-3a²-6a³-6a²-6a=8-2a² или 2(4-a²)
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Answers & Comments
б) -2(а -(4 + 2а(а - 1))) - 3а(-а - (4 + а(-1- 2а))) - 6а(-а² + а + 1)=-2(а - (4 + 2а² - 2a)) - 3а(-а - (4 -а- 2а²))) + 6а³-6a²-6a=
-2(a-4-2a²+2a)-3a(-a-4+a+2a²)+6a³-6a²-6a=-2a+8+4a²-4a+3a²+12a-3a²-6a³-6a²-6a=8-2a² или 2(4-a²)