(3+√2)(3-√2 )
Simplify

9

Step-by-step explanation:

Multiply step by step, then add your individual answers.

a. (3 + )(3 - )

3 * 3 = 9

b. (3 + )(3 - )

* 3 = 3

c. (3 + )(3 - )

3 * (- ) = -3

d. 9 + 3 + (-3 )

The terms cancel, since one is positive-3 and the other is negative-3. Therefore, all you have left is 9.

whatever you can spend with $11.53 or under.

step-by-step explanation:

20 - 8.47 = 11.53. take away the money he used for lunch from the starting amount of 20.

{3 + i, 3 - i, 3, -1}

step-by-step explanation: