Question

em notação científica calcule
7,2x10^5+2,3x10^-4

Answer 1

2,3 x 10^-4 = 2,3 x (10^-4 x 10^9)/10^9 = 0,0000000023 x 10^5
7,2x10^5 + 0,0000000023 x 10^5 = 7,2000000023 x 10^5