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Mathematics 16 Online
OpenStudy (anonymous):

what adds up to equal -4 but multiplies to equal 2

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?

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?

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

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

OpenStudy (anonymous):

|dw:1414377931855:dw| he taught it like this

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