(-1 + -1)•(-1 - -1) = ?

-2

Step-by-step explanation:

(-1+-1)*(-1--1)

A negative plus a negative will stay negative.

2 negative signs will make a positive number. Example x-(-x)=0

A negative minus a positive will cancel out. For example -6-(-6)=0

Therefore, -1-(-1) will be 0

-2*0

-2

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.