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batya69
@batya69
December 2021
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решите номер 102 , даю 10 баллов
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Trofimkirillov
N°102
1)2,4(5x-10)-5(x+1)-3(1-3x)
12x-24-5x-5-3+9x
16x-32
2)-2x(x+4)+5(x²-3x)
-2x²-8x+5x²-15x
3x²-23x
3)3a(3a-a²)-4a(2a²-5a)
9a²-3a³-8a³+20a
9a²-11a³+20a
-11a³+9a²+20a
4)3m(n-2m)-m(m+4n)
3mn-6m²-m²-4mn
-mn-7m²
-7m²-mn
5)0,3x²(x²-3x+2)-0,6x(2x³+6x²-4x)
0,3x⁴-0,9x³+0,6x²-1,2x⁴-3,6x³+2,4x²
-0,9x⁴-4,5x³+3x²
6)4x(7y-3x²)-3y(x-y²)
28xy-12x³-3xy+3y³
25xy-12x³+3y³
-12x³+3y³+25xy
7)5a(3a²-2b)+17b(2a+b)-3a(-4b+a)
15a³-10ab+34ab+17b²+12ab-3a²
15a³+36ab+17b²-3a²
15a³+17b²-3a²+36ab
8)2x³(3x-1)-4x(x³-2x²+3x)-5x-2x⁴
6x⁴-2x³-4x⁴+8x³-12x²-5x-2x⁴
6x³-12x²-5x
1 votes
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Answers & Comments
1)2,4(5x-10)-5(x+1)-3(1-3x)
12x-24-5x-5-3+9x
16x-32
2)-2x(x+4)+5(x²-3x)
-2x²-8x+5x²-15x
3x²-23x
3)3a(3a-a²)-4a(2a²-5a)
9a²-3a³-8a³+20a
9a²-11a³+20a
-11a³+9a²+20a
4)3m(n-2m)-m(m+4n)
3mn-6m²-m²-4mn
-mn-7m²
-7m²-mn
5)0,3x²(x²-3x+2)-0,6x(2x³+6x²-4x)
0,3x⁴-0,9x³+0,6x²-1,2x⁴-3,6x³+2,4x²
-0,9x⁴-4,5x³+3x²
6)4x(7y-3x²)-3y(x-y²)
28xy-12x³-3xy+3y³
25xy-12x³+3y³
-12x³+3y³+25xy
7)5a(3a²-2b)+17b(2a+b)-3a(-4b+a)
15a³-10ab+34ab+17b²+12ab-3a²
15a³+36ab+17b²-3a²
15a³+17b²-3a²+36ab
8)2x³(3x-1)-4x(x³-2x²+3x)-5x-2x⁴
6x⁴-2x³-4x⁴+8x³-12x²-5x-2x⁴
6x³-12x²-5x