Ask your own question, for FREE!
Mathematics 59 Online
OpenStudy (anonymous):

why doesnt x^3-8=(x-2)^3??? please reply!

OpenStudy (amistre64):

becasue they are 2 different operations

OpenStudy (amistre64):

exponents are(nt) distributive across addition

OpenStudy (anonymous):

In one you are cubing the x and subtracting the 8. In the other you are subtracting the 2 then cubing it. On a side not: I WANNA BE A MOD AMISTRE!!!

OpenStudy (anonymous):

because (x-2)^3 is like (x-2)(x-2)(x-2)

OpenStudy (anonymous):

so, it doesn't equal the same as x^3-8

OpenStudy (anonymous):

AMISTRE!!! D: My lip is poking out :(

OpenStudy (anonymous):

Multiply out \[(x-2)^3\] and you will see that the answer is not \[x^3-8\]

OpenStudy (anonymous):

In general: \[(a+b)^n \neq a^n+b^n\]

OpenStudy (anonymous):

but how would u know it is (x-2)(x^2+2x+4)

OpenStudy (anonymous):

We agree that 2^3=2*2*2? So: (x-2)^3=(x-2)(x-2)(x-2) So you can get: (x-2)(x^2+2x+4)

OpenStudy (anonymous):

ohhh i understand thanks so muh guys!

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!
Latest Questions
rose12345: hellp
6 minutes ago 4 Replies 0 Medals
vennii2taxcked: Go follow my insta @_mrs.tooflyyy
1 hour ago 2 Replies 0 Medals
rose12345: what is the genotype ratio for this cross?
1 hour ago 6 Replies 1 Medal
DemonKinge: anybody hea white?
1 hour ago 1 Reply 0 Medals
DemonKinge: I just found out I'm gay
1 hour ago 10 Replies 1 Medal
DemonKinge: who's gotta big gyatt lmao
2 hours ago 2 Replies 0 Medals
rose12345: What is the genotype ratio for this cross?
2 hours ago 3 Replies 0 Medals
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!