Ask your own question, for FREE!
Mathematics 14 Online
OpenStudy (markchernioglo):

I need help with this problem! (2x+6)^3

OpenStudy (markchernioglo):

I will probably know most of it but i still need help.

OpenStudy (markchernioglo):

baru do you know this one?

OpenStudy (baru):

you want to solve for x?

OpenStudy (markchernioglo):

no im just finding the product.

OpenStudy (baru):

oh ok

OpenStudy (baru):

what do you think you should do?

OpenStudy (markchernioglo):

well probably write out 2x+6 3 times? idk what do you think?

OpenStudy (baru):

yes you can do that

OpenStudy (markchernioglo):

k, but then im kinda confused.

OpenStudy (baru):

do this first (2x+6)(2x+6)

OpenStudy (baru):

what do you get?

OpenStudy (markchernioglo):

k so do i multiply 2x and 2x?

OpenStudy (markchernioglo):

then 6 and 6?

OpenStudy (markchernioglo):

(4x+36)?

OpenStudy (baru):

no

OpenStudy (markchernioglo):

lol see i suck, idk even when I try I fail.

OpenStudy (markchernioglo):

so what do I do?

OpenStudy (baru):

ok, lets start with this a(b+c)

OpenStudy (baru):

expand that

OpenStudy (markchernioglo):

umm well is 2 a, x b, and 6 c?

OpenStudy (markchernioglo):

if so then that would mean 12x

OpenStudy (baru):

no, i'm just teaching you the method a,b,c has nothing to do with your question so find the product a(b+c)

OpenStudy (markchernioglo):

no it would actually mean 2(x+6)

OpenStudy (markchernioglo):

oh ok

OpenStudy (markchernioglo):

lol so a times b and the sum of c.

OpenStudy (markchernioglo):

i dont know what am i supposed to say? :)

OpenStudy (markchernioglo):

lol sorry for looking so stupid.

OpenStudy (baru):

a(b+c) =ab+ac

OpenStudy (baru):

you get how to do that?

OpenStudy (markchernioglo):

ok i see

OpenStudy (markchernioglo):

yea

OpenStudy (baru):

so try a(b+c+d)

OpenStudy (markchernioglo):

so ab+ac+ad

OpenStudy (baru):

exactly

OpenStudy (markchernioglo):

(2x+6)^3

OpenStudy (markchernioglo):

and does that work with this problem?

OpenStudy (baru):

wait, we'll get there

OpenStudy (markchernioglo):

ok

OpenStudy (baru):

now i'll show you how to do (a+b)(c+d)

OpenStudy (markchernioglo):

k

OpenStudy (baru):

|dw:1447142957133:dw| choose the leftmost number

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!