simplify. write in scientific notation. (9x10^-3)^2
a ) 8.1 x 10^-5
b ) 81 x 10^-4
c ) 81 x 10^-3
d ) 8.1 x 10^-6
To simplify (9x10^-3)^2, first square the base and then multiply the exponents:
(9x10^-3)^2 = 9^2 x (10^-3)^2
= 81 x 10^(-3 x 2)
= 81 x 10^-6
Therefore, the simplified expression in scientific notation is:
d) 8.1 x 10^-6