Question 1055266
Subtract 4x²+9x+2 from 5x²+7x−9.
<pre>
You may be getting them in the wrong order.
Think of a similar simple problem with just
numbers that would be worded the same way.
For instance, think of this simple problem 
that is worded the same way:

Subtract 7 from 10.

To do that you start with 10 and then subtract 
7 from it, like this:

   10-7

and you get 3.

So when your problem is

Subtract 4x²+9x+2 from 5x²+7x&#8722;9. 

To do that you start with 5x²+7x-9 and then subtract 
4x²+9x+2 from it, like this:

   (5x²+7x-9)-(4x²+9x+2)

The first parentheses is not prefixed with anything,
so to remove the parentheses simply erase them.
However the second parentheses is preceded by a -
sign.  So to remove the parentheses, change the sign
of every term inside, so we have

   5x²+7x-9-4x²-9x-2

Combine like terms:

The 5x² and the -4x² gives x².
The +7x and the -9x gives -2x.
The -9 and the -2 gives -11.

Answer:

x²-2x-11

Edwin</pre></b>