Monday

October 20, 2014

October 20, 2014

Posted by **Jane** on Friday, January 1, 2010 at 5:53am.

(2x-5)(x+3)

Many thanks.

Happy New Year

- Maths -
**drwls**, Friday, January 1, 2010 at 6:17amLearn and apply the FOIL method.

(First, Outside, Inside, Last)

That describes the pairs of terms that you must multiply and then add together.

http://www.algebrahelp.com/lessons/simplifying/foilmethod/pg2.htm

To learn algebra, you really need the practice doing this yourself

- Maths -
**chelsea**, Friday, January 1, 2010 at 6:29amsurely, it would be x^3-2x-15

please correct me if i'm wrong

- Maths (chelsea) -
**drwls**, Friday, January 1, 2010 at 6:32amChelsea is wrong. Only the -15 term is correct. There is no cubic (x^3) term

- Maths -
**Jane**, Friday, January 1, 2010 at 6:38ami looked at the site, now i'm really confused, could you just show me the answer and working out, we haven't done the foil method in school we do it differently.

- Maths -
**drwls**, Friday, January 1, 2010 at 6:42amWhat you are doing in school must be the same thing, perhaps with a different name.

Why do you keep changing your name?

When you multiply the first pair you get

2x * x = 2x^2

That is the first term.

When you multiply the "inside" pair you get -5x

Now you do the others and combine terms.

- Maths -
**drwls**, Friday, January 1, 2010 at 6:50amThe answer you should get is

2x^2 +x -15

**Answer this Question**

**Related Questions**

To:EVERYONE AT JISKHA - I JUST WANT TO WISH ALL A HAPPY NEW YEAR. A NEW YEAR A ...

To All The Teachers In Jiskha Website - Happy New Year!!!!!!!!!!!!! Thanks to ...

Algebra - Simplify: 2 + 3 . 10 Devided by 5 . 3 - 9 (Thanks and Happy New Year!)

Maths - How do i expand and simplify (2x+5) (3x-4)

Maths - *I'm a bit confused with this qn* Expand and Simplify 3(3x-y)^2

maths - Hi, could someone please tell me how I would go about working these out...

accounting - a) Use the following data to compute averafe revenues per store, ...

Maths - Expand and simplify expression for the area of an rectangle Shorter side...

psy - Need the definition of buttons that is within the central nervous system. ...

Happy New Year to all - Be sure to have enough blackeyed peas to guarantee a ...