SOLUTION: if {x^2-3x-40} divided by {x+5} x^2-3x-40 divided by x+5 x^2-5x -2x-40 -2x- 10 =30 x-2+30 x-30 I keep trying the problem to see were i made my mis

Question 266900: if {x^2-3x-40} divided by {x+5}
x^2-3x-40 divided by x+5
x^2-5x
-2x-40
-2x- 10
=30
x-2+30
x-30
I keep trying the problem to see were i made my mistake and i still can't seem to find were the error is?

Found 3 solutions by jim_thompson5910, josmiceli, JBarnum:
Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!

Start with the given expression.

Factor to get .

Factor to get .

Highlight the common terms.

Cancel out the common terms.

Simplify.

So simplifies to .

In other words, where
Answer by josmiceli(19441)   (Show Source): You can put this solution on YOUR website!

What do I multiply by to get ?
My first try is

subtract this from , I get

Now what do I add to to finish the division?
I'll try

I'll subtract this from
I get , so the division is finished with no remainder
The answer is
To prove it:

OK
Answer by JBarnum(2146)   (Show Source): You can put this solution on YOUR website!

is same as so:

is the answer
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