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stepanovaalina2
@stepanovaalina2
July 2022
1
9
Report
№1
(m-2)²-(m+1)(m-3)=
5(d-c)²+10dc=
x³+(2-x)(x²+2x+4)=
№2
упростите выражение(20a4(4это степень)-4a³b):4a и найдите его значение при a=3,b=-4
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azamurat
M²-4m+4-(m²-3m+m-3)=m²-m²-4m+2m+7=-2m+7
5d²-10dc+5c²+10dc=5d²+5c²=5(d²+c²)
x³+2x²+4x+8-x³-2x²-4x=8
20a⁴-4a³b/4a=4a(5a³-a²b)/4a=a²(5a-b)=9(15+4)=9*19=171
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Answers & Comments
5d²-10dc+5c²+10dc=5d²+5c²=5(d²+c²)
x³+2x²+4x+8-x³-2x²-4x=8
20a⁴-4a³b/4a=4a(5a³-a²b)/4a=a²(5a-b)=9(15+4)=9*19=171