Express `(2.2xx10^(4))xx(3.3xx10^(5))` in scientific notation.

Express (6.6xx10^(4))+(0.55xx10^(5)) in scientific notation.

Express (6.6xx10^(4))-(0.55xx10^(5)) in scientific notation.

Express (6.6xx10^(4))+(0.55xx10^(5)) in scientific notation.

Express (6.6xx10^(4))-(0.55xx10^(5)) in scientific notation.

Express (6.6xx10^(9))/(5.5xx10^(7)) in scientific notation.

Express (6.6xx10^(9))/(5.5xx10^(7)) in scientific notation.

Express 2.2 (10*4) . 3.3 (10*5) in scientific notation

Whenever x and y are both integers , what is (6.0xx10 ^(x ) )(5.0 xx 10 ^(y)) expressed in scientific notation ?

0.5xx10^(-4)xx0.3xx10^(-3)xx10