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Mathematics 7 Online
OpenStudy (darkbluechocobo):

Check my synthetic division please

OpenStudy (darkbluechocobo):

OpenStudy (darkbluechocobo):

1 0 -6 4 -2 -2 4 4 1 -2 -2 8

OpenStudy (darkbluechocobo):

false

OpenStudy (anonymous):

correct ,remainder is 8

OpenStudy (darkbluechocobo):

@ganeshie8

ganeshie8 (ganeshie8):

since your remainder is 8, i think you should tick True

OpenStudy (darkbluechocobo):

Ah i was confused

OpenStudy (darkbluechocobo):

so if it was the opposite it would be false?

ganeshie8 (ganeshie8):

your work for synthetic division looks Perfect !

OpenStudy (darkbluechocobo):

well thank you :D now that you told me that i think i can get them all right :p aha

ganeshie8 (ganeshie8):

i can see :)

OpenStudy (darkbluechocobo):

Could you explain to me how to start off this one though? Use the remainder theorem and synthetic division to find the value of f(2) for f(x) = 2x^3 − 4x^2 + 85

OpenStudy (darkbluechocobo):

so like would this be f(x)/x+2?

ganeshie8 (ganeshie8):

f(x) / (x-2)

OpenStudy (darkbluechocobo):

so it is the opposite when written out like that?

ganeshie8 (ganeshie8):

remainder theorem tells you : the remainder of f(x)/(x-2) is same as f(2)

OpenStudy (darkbluechocobo):

okay :p un moment then to solve it

ganeshie8 (ganeshie8):

2 | 2 -4 0 85 | ---------------------- 2

OpenStudy (darkbluechocobo):

2 | 2 -4 0 85 | 4 0 0 ---------------------- 2 0 0 85?

ganeshie8 (ganeshie8):

Correct!

OpenStudy (darkbluechocobo):

whoop

ganeshie8 (ganeshie8):

good job :)

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