Thread: Long & synthetic division

Hi Guys!

I'm new - very glad I found this. I have a prescribed textbook for my math course - in the back they only give you answers to the problems but do not show how they got the answer - so its difficult to trace your steps and see where you went wrong. Which explains me being stuck with these 3 problems.

I'll explain :

Long or synthetic division can be used for this one:

2x^4 - X^3 + 9x^2 divided by x^2 + 4

When I do the above one, I get to a point where I have powers that arent the same so I can't minus - all the ways I try it I either get stuck where I can't divide more or I get a wrong answer than that in the book - I'd like to see what answer some of you get, maybe the book is wrong. Please type our your steps - Im desperate to see where I go wrong.

Okay this one you have to use long division - again I get a horribly wrong answer if compared to the back of the book:

6x^3 + 2x^2 + 22x divided by 2x^2 + 5


The one below must be done using synthetic division - again my answer is wrong compared to the back of my textbook and I can't seem to understand why or how:

x^3 + 2x^2 + 2x + 1 divided by x + 2


I would appreciate your help a lot I'm either overlooking something or the book is wrong and Im very keen to find out which!

Thanks!

Janine

Hello, Janine!

You need to leave spaces for "missing terms" . . .

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