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BuddyModi · Jul 12, 2009, 09:43 AM

please simplify -11x^2+16x

Unknown008 · Jul 12, 2009, 09:53 AM

Ok, what you have to do is to factorise the common terms, putting them outside brackets, and the rest of terms into brackets. I'll give you an example;

$2x^2 - 4 = 2(x^2 - 2)$

Do you see? 2x^2 could be divided by 2, but so did 4. So, 2 was a factor of both 2x^2 and 4, and I put it outside brackets.

$-3x^2-5x = -x(3x+5)$

As you can see here, there is -x common, so, I put it outside brackets.

Can you now try your question and post the answer back? :)