Respostas
respondido por:
23
1º)
a) 3a³-2a+5a³--4a³-3a
4a³-5a
b)7x²-6x+9+2x+5x²-8
12x²-4x+1
c)3a+8ab+5b+2ab-7a+b-ab
-4a+9ab+6b
2º)
a)8x³ - (x²+ 7x – 5 ) + ( -2x³+6x²-x) – (-1+3x²)
8x³-x²-7x+5-2x³+6x²-x+1-3x²
6x³+2x²-8x+6
b)ab – (-2a + b ) – (c+3a-ab) + (4a-c)
ab+2a-b-c-3a+ab+4a-c
3a+2ab-b-2c
c)x – (-5y+3x) + (xy-x-y ) – (7y + 2xy )
x+5y-3x+xy-x-y-7y-2xy
-x-xy-3y
d)ax – [-2bx-(ab+ax-bx) + 2ab]- ( 2ax - ab )
ax-[-2bx-ab-ax+bx+2ab]-2ax+ab
ax+2bx+ab+ax-bx-2ab-2ax+ab
bx
a) 3a³-2a+5a³--4a³-3a
4a³-5a
b)7x²-6x+9+2x+5x²-8
12x²-4x+1
c)3a+8ab+5b+2ab-7a+b-ab
-4a+9ab+6b
2º)
a)8x³ - (x²+ 7x – 5 ) + ( -2x³+6x²-x) – (-1+3x²)
8x³-x²-7x+5-2x³+6x²-x+1-3x²
6x³+2x²-8x+6
b)ab – (-2a + b ) – (c+3a-ab) + (4a-c)
ab+2a-b-c-3a+ab+4a-c
3a+2ab-b-2c
c)x – (-5y+3x) + (xy-x-y ) – (7y + 2xy )
x+5y-3x+xy-x-y-7y-2xy
-x-xy-3y
d)ax – [-2bx-(ab+ax-bx) + 2ab]- ( 2ax - ab )
ax-[-2bx-ab-ax+bx+2ab]-2ax+ab
ax+2bx+ab+ax-bx-2ab-2ax+ab
bx
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