Given that 640 written as a product of its prime factors is

2 x 2 x 2 x 2 x 2 x 2 x 2 x 5

640/2 = 320

320/2=160

160/2=80

80/2=40

40/2=20

20/2=10

10/2=5

answer: 38.47 is your answer

step-by-step explanation: hope i you and who ever sees this answer have a great rest of your day : )

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.