blog march 24

Well i just finished 28 aleks and it was very sick nasty, this stuff is so simple but the simple mistakes are starting to kill me. Its driving me insane, but at least i am done and will be getting my 28 points, but ill review some things i got wrong
Factoring a quadratic with a leading coefficient greater than one...
Ex :
5y^2 + 13y - 6
Use the FOIL method backwards...
The coefficient of is . Using whole numbers, only 1 and 5 can be multiplied to get .
So you have to find two integers and such that 5y^2 + 13y - 6 = ( 1y + p) ( 5y + q )
Using the FOIL method to expand the right-hand side of this equation, you get that ( pq ) = -6 and q + 5p = 13
You'll find that 3 and -2 work...3 in place of p and -2 in place of q.
Factoring a quadratic with a leading coefficient greater than one...
Ex :
5y^2 + 13y - 6
Use the FOIL method backwards...
The coefficient of is . Using whole numbers, only 1 and 5 can be multiplied to get .
So you have to find two integers and such that 5y^2 + 13y - 6 = ( 1y + p) ( 5y + q )

Using the FOIL method to expand the right-hand side of this equation, you get that ( pq ) = -6 and q + 5p = 13

You'll find that 3 and -2 work...3 in place of p and -2 in place of q.

The answer is