Question

Phân tích các đa thức sau thành phân tử( phương pháp đặt thừa số chung)

1, 2a+2b

2, 2a-2b

3, 2a+4b-6c

4, 3a-6b-9c

5, xy-x

6, -5x-10xy-15y

7, -7a-14ab-21b

8, 6xy-12x-18y

9, 8xy-24y+16x

10, 9ab-18a+9

11, ax+a

12, mx+my+m

13, -ax-ay-a

14, -2ax-4ay

15, 2ax-2ay+2a

16, 4ax-2ay-2

17, 5a-10ax-15a

18, 5ax-15ay+20a

19, 3a²x-6a²y+12a

20, 2axy-4a²xy²+6a³x²

CÁC BẠN ƠI GIÚP MIK VS MIK CẦN GẤP LẮM

Answer 1

1, 2a+2b = 2( a + b )

2, 2a-2b = 2( a - b )

3, 2a+4b-6c = 2( a + 2b - 3c )

4, 3a-6b-9c = 3( a - 2b - 3c )

5, xy-x = x( y - 1 )

6, -5x-10xy-15y = -5( x + 2xy + 3y )

7, -7a-14ab-21b = -7( a + 2ab + 3b )

8, 6xy-12x-18y = 6 ( xy - 2x - 3y )

9, 8xy-24y+16x = 8 ( xy - 3y + 2x )

10, 9ab-18a+9 = 9( ab - 2a + 1 )

11, ax+a = a( x + 1 )

12, mx+my+m = m( x + y + 1 )

13, -ax-ay-a = -a( x + y +1 )

14, -2ax-4ay = -2a( x + 2y )

15, 2ax-2ay+2a = 2a( x - y + 1 )

16, 4ax-2ay-2 = 2( 2ax - a - 1 )

17, 5a-10ax-15a = 5a( 1 - 2x - 3 ) = 5a( -2x - 2 )

18, 5ax-15ay+20a = 5a( x - 3y + 4 )

19, 3a²x-6a²y+12a = 3a( ax - 2ay + 4 )

20, 2axy-4a²xy²+6a³x\(^2\) = 2ax( y - 2ay\(^2\) + 3a\(^2\)x )