Find the answer to these polynomial expressions?

natall

New member
under the topic polynomial expressions im still unsure about this next one as it says
Find:
2x^2+5x+6
----------------- (divide by)
x-1


and

(5x^3+16x^2+8x+39) / (x+3)

lastly guys im lost in finding three linear factors of the following cubics:

168 + 86x - 69x^2 - 20x^3

and

Factorising:
x^3 + 7x^2 + 10x +4

would someone be able to help me
please
i really appreciate it heaps guys
 
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