Mathematics
5 Online
Aqual:
Factor By Grouping.
Join the QuestionCove community and study together with friends!
Sign Up
Aqual:
Aqual:
Aqual:
@snowflake0531
Aqual:
x^6 + (x +1)
snowflake0531:
WHat
Join the QuestionCove community and study together with friends!
Sign Up
snowflake0531:
one sec, let me retype it
snowflake0531:
\[(x^3 +x^2) + (x + 1)\]
First, what's the greatest common factor for \[x^3 and x^2\]
Aqual:
x
snowflake0531:
Er, are you sure?
Aqual:
x^2
Join the QuestionCove community and study together with friends!
Sign Up
snowflake0531:
Yep
So we have
\[x^2 ( x+1) + 1(x+1)\]
agreed?
Aqual:
whered the 1st x+1 come from?
snowflake0531:
Well, anything multiplied 1 is itself
and to make the next step less confusing, I added a 1 in front
snowflake0531:
so
yea?
or no?
Aqual:
yea
Join the QuestionCove community and study together with friends!
Sign Up
Aqual:
i see now, it come from the x^2
snowflake0531:
wat
Aqual:
cuz if it was 2x^2, itd be 2, but its 1x^2
snowflake0531:
._.
No
Aqual:
oh
Join the QuestionCove community and study together with friends!
Sign Up
Aqual:
ok, im still confused
snowflake0531:
We had
\[x^2 (x+1) + x+1\]
do you get how we got that?
Aqual:
oh, yeah.
snowflake0531:
Okay
and using the associative property or whatever
it can also be written as
\[x^2(x+1) + (x+1)\]
yes?
Aqual:
ye
Join the QuestionCove community and study together with friends!
Sign Up
snowflake0531:
Okay, adn we look at the right half
(x+1), do you agree that (x+1) equals 1(x+1)
?
Aqual:
si
snowflake0531:
lol
so now do you get how I got
\[x^2(x+1) + 1(x+1)\]
Aqual:
kinda
Aqual:
im still confused where the 1 in x^2(x+1) came from
Join the QuestionCove community and study together with friends!
Sign Up
snowflake0531:
ohhhhh that 1
Aqual:
ye
snowflake0531:
So, we got that the greatest common factor of \[x^3 + x^2\] is \[x^2\]
snowflake0531:
So, factor it out
Aqual:
i thought it would just be x
Join the QuestionCove community and study together with friends!
Sign Up
snowflake0531:
What do you get after you factor out \[x^2\] from \[x^3 +x^2\]
Aqual:
but that would make it x^3 instead of x^2
Aqual:
x
snowflake0531:
?
Aqual:
well, x^2(x)
Join the QuestionCove community and study together with friends!
Sign Up
snowflake0531:
I have no clue what you're talking about lol
but we would do this by
\[(x^3+x^2)/x^2\]
Which is
\[\frac{ x^3 }{ x^2 } + \frac{ x^2 }{ x^2 }\]
snowflake0531:
What is
\[\frac{ x^3 }{ x^2 }\]
snowflake0531:
Do you know the laws of exponents?
Aqual:
hey, my dad came and helped
snowflake0531:
nice
got the answer now?
Join the QuestionCove community and study together with friends!
Sign Up
Aqual:
eh, nrly, im gonna ask my teach tmrw
Aqual:
i gotta shower anyway
Aqual:
and the wifi will be off by the time i get out.
Aqual:
thank you tho, much appreciated.
snowflake0531:
kk