# How do you evaluate #(6+ \sqrt { 7} ) ( 4- \sqrt { 7} )#?

##### 1 Answer

Sep 18, 2017

#### Answer:

You can use the F.O.I.L. method but that only applies to binomials (such as these). A more general method is to write each term of the first factor as a multiplier of the second factor.

#### Explanation:

Write each term of the first factor as a multiplier of the second factor:

Use the distributive property on both terms of the right side:

The last term becomes -7:

Combine like terms: