Matematicas
1. ( 3x3 + 4x2 - 7x + 1 ) + ( 9x2 – 4x2 -6x )
a) 3x3 + 4x2 – 7x + 1 + 9x2 - 4x2 -6x
3x3 + 9x2 - 13x + 1b) 3x3 + 4x2 - 7x + 1
5x2 – 6x
3x3 + 9x2 – 13x + 1
2. ( 4x3 + 5x - 3 ) - ( 3x3 – 2x2 + 5x - 3 )
a) 4x3 + 5x - 3-3x3 + 2x2 - 5x + 3
x3 + 2x2 + x
b) 4x3 + 0x2 + 5x - 3
-3x3 + 2x2 - 5x + 3
x3 + 2x2 +x
3. ( 3u - 1 ) ( u + 2 ) + 7u (u + 1 )
( 3u2 + 2u – u - 2) + (7u2 + 7u)
9u2 + 8u – 2
4. ( 2x -1) ( x2 – 5 ) ( x3 – 1 )
( x3 – 1 ) ( 2x3 - 10x - x2 + 5)
2x6 – 10x4 - x5+ 5x3 – 2x3 + 10x – 5
2x6 – x5 – 10x4 + 3x3 + x2 +10x - 5
5. 6 a3 b3 - 9 a2 b2 + 3 a b
3 a b2
6 a3 b3 - 9 a2 b2 + 3a b
3 a b2 3 a b2 3 a b2
2 a2 b – 3 a + 1 b -1
2 a2 b – 3 a + 1
b
6. ( x2 + 2 y ) ( x2 - 2 y )X4 – 2x2y + 2x2y – 4y2
X4 – 4y2
7. ( 5x – 4 y ) 2
( 5x – 4 y ) ( 5x – 4 y )
25 x2 – 20 xy – 20 xy + 16 y2
25 x2 – 40 xy + 16 y2
8.( x2 – 3y2) 2
( x2 – 3y2) ( x2 – 3y2)
X4 – 3x2y2 - 3x2y2 + 9y4
X4 – 6x2y2 + 9y4
9. ( 2x + 3y) 3
( 2x + 3y) ( 2x + 3y) ( 2x + 3y)
( 2x+ 3y) ( 4x2 + 6xy + 6xy + 9y2)
8x3 + 24 x2y + 18 xy2 + 12 x2y + 36 xy2 + 27 y3
8x3 + 36 x2 y + 54 xy2 + 27 y3
10. ( x – 2y)3
( x – 2y) ( x –2y) ( x – 2y)
( x – 2y) ( x2 – 2 xy – 2xy + 4y2
( x – 2y) ( X2 – 4 xy + 4 y2)
x3 – 4 x2y + 4xy2 - 2x2 y + 8xy2 – 8y2
x3 – 6 x2y + 12 xy2 – 8y2
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