Mathematics
16 Online
OpenStudy (anonymous):
what adds up to equal -4 but multiplies to equal 2
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (amistre64):
setup a system of equations
OpenStudy (amistre64):
how many terms and factors do we have? is this a binary operation?
OpenStudy (anonymous):
im just trying to set (2x-4) equal to zero
OpenStudy (anonymous):
i have p(x)=2x^5-4x^4+0x^3+2x^2-2x-4 divided by (2x-4)
OpenStudy (amistre64):
do you know synthetic division?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
i do but i have to factor the 2x-4 dont i
OpenStudy (amistre64):
you do that by dividing it out ...
OpenStudy (anonymous):
whats tht
OpenStudy (amistre64):
P(x) = (2x-4) Q(x) + R
P(x)
----- = Q(x) + R/(2x-4)
2x-4
OpenStudy (anonymous):
what did u do?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (amistre64):
i divided both sides by (2x-4)
OpenStudy (amistre64):
if you know synthetic division, then divide it
OpenStudy (anonymous):
where did u get the q(x)+R and isnt tht just long division?
OpenStudy (amistre64):
thats all any division is ....
OpenStudy (amistre64):
synthetic just organizes the data in a different way, but the results are the same
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
ok, so what is the q(x)+r?
OpenStudy (amistre64):
the result of divide off the factor ... as demonstrated.
you said you knew how to do synthetic division
OpenStudy (anonymous):
yeah but i guess my teacher taught it different
OpenStudy (amistre64):
show me your attempt
OpenStudy (amistre64):
or do long hand, whatevers easier for you
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
|dw:1414377931855:dw|
he taught it like this