Evaluate the expression Express your answer in scientific notation 2 point 1 times 10 to the 3rd times 20 point 6 times 10 to the 5th?

Answer 1

(2.1 x 103) (20.6 x 105) = (2.1 x 20.6) x 10(3+5) = 43.26 x 108 = 4.326 x 109