Tell the measure of the angle in degrees for 1/2

What is the absolute value of the complex number -4-sqrt2i

Піf x = y and y= z, which statement must be true? оа. -x = -2 b. x= z ос. —x = 2 od. 2= x

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0