(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.

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.