## anonymous 4 years ago HELP RATIONALIZE

1. anonymous

$(7+\sqrt{2})(8-3\sqrt{2})$

2. anonymous

Use FOIL.

3. anonymous

Whats that

4. anonymous

$56-13\sqrt{2}-6$

5. anonymous

First Outside Inside Last Say you have (x+y)(x+y). You take the first two and multiply them together, then go to the outside and multiply those together and add, and then multiply the last two. So the foil of (x+y)(x+y)=x^2+xy+xy+y^2=x^2+2xy+y^2

6. anonymous

you sure cuss it doesnt show that on my answe rsheet

7. anonymous

Multiply the FIRST terms of the two expressions, then the OUTER terms of the two expressions, then the INNER terms of the two expressions, and finally the LAST terms of the two expressions. Then add all of these terms together.

8. anonymous

Maybe not. What does it show?

9. anonymous

Did you simplify it?