write in standard from:
8.36 x 10^5
and
-6.43 x 10^-4
8.36000000 *10^5 = 836000 moving decimal point five to the right
-00000000006.43*10^-4 = -0.000643 moving decimal point four to the left
8.36 x 10^5
and
-6.43 x 10^-4
-00000000006.43*10^-4 = -0.000643 moving decimal point four to the left