Factoring Trinomials (need help double checking my h/w)

[shawie]

I tried working them all out. I'm not sure what the final answers are supposed to be - where did I go wrong?

http://img180.imageshack.us/img180/3748/math2su.jpg

 

[arthur ohlsten]

1)
6x^2+5x-6

factors of 6 1,6 2,3 this is coefficient of x^2
factors of 6 1.6 2.3 this is constant term

we want a set whose difference of products = 5 2,3 2,3 does it
[2x+3][3x-2] answer

Arthur

 

[arthur ohlsten]

2)
3x^2-7x+2
factors of 3........ 1,3
factors of 2.........1,2
we want some of products to =7
[3x-1][x-2] Answer

3)
x^2-3x-28
dactors of 1...........1,1
favtors of 28..........1,28....2,14....4.7
we want difference of products to = 3
1,1 and 4,7 does it
[x+4][x-7] answer

Arthur

 

[arthur ohlsten]

4)
x^2+3x-10
factors of 1 1,1
factors of 10 1,10 2.5
we want difference of products to =3
1,1....2,5 does it
[x+5][x-2]



5)
2x^2+x-3
[2x+3[x-1]

Arthur