Please Help
(3x + 4) (x-2)
1) 3x^2-2x-8
2) x-8
3) 3x-2x-8
4) 3x^2+2x+8
I think the answer is 3 but I am not sure. I think it is 3 because combining like terms 3x*x =3x^2 and the 4*-2 would equal -8 but I am not sure what I am supposed to do.
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OpenStudy (hockeychick23):
first do 3x*x
next: 3x* -2
next: 4*x
next: 4* -2
OpenStudy (anonymous):
But the second step leaves me with -6x and then -8x?
or is it 3x^2
OpenStudy (hockeychick23):
theres no -8x
OpenStudy (hockeychick23):
3x*x= ?
OpenStudy (anonymous):
3x or 3x^2 i am not sure
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OpenStudy (hockeychick23):
3x^2, you have to x's
OpenStudy (anonymous):
OK thanks
OpenStudy (hockeychick23):
yea, so what is -2*3x
OpenStudy (anonymous):
-6x
OpenStudy (hockeychick23):
good so now what is 4*x
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OpenStudy (anonymous):
4x
OpenStudy (hockeychick23):
good, now -2*4
OpenStudy (anonymous):
-8
OpenStudy (hockeychick23):
good so we have: 3x^2-6x+4x-8 so now combine like terms
OpenStudy (anonymous):
3x^2-10x-8 ?
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OpenStudy (hockeychick23):
no, what is 4x-6x?
OpenStudy (anonymous):
Oh -2x
OpenStudy (hockeychick23):
yes, so we have 3x^2-2x-8
OpenStudy (anonymous):
So it's the first one.
Thank you so much for taking the time to explain it to me
everyone else tries to give me the answer and I don't like that.