Posted by unknown on Thursday, August 23, 2007 at 10:24pm.
seperate and multiply based on
FOIL
first
outer
inner
last
(2y-3)^2=
(2y-3)(2y-3) then use foil and multiply the first term, outer term, inner terms then last terms .
(2y-3)(2y-3)
first terms multiplied
2y*2y= 4y^2
outer terms multiplied
2y*(-3)=-6y
inner terms multiplied
(-2y)*3=-6y
last terms multiplied
(-3)*(-3)=9
Now combined FOIL (first outer inner and last terms )
4y^2-6y-6y+9= but now you can combine the -6y's so (-6y-6y=-12y)
and you get 4y^2-12y+9
thank you...
Your welcome =)
duplicate post
inner terms multiplied
2y*(-3)=-6y
it is the same as the outer terms multiplied (the negative was misplaced before)
Oh..it was a duplicate?
Oh well I solved it Dr.Bob.=D
anyways..ha
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