Question

Exponents and scientific notation

Answer 1

Explanation:

`3) (d^(-5)*d^(3))/((d^(4))^(3))=(d^(-5+3))/(d^(4*3))\\\\= (d^(-2))/(d^(12))\\\\= (1)/(d^(12 -[-2]))\\\\=(1)/(d^(12+2))\\\\=(1)/(d^(14))`

Hint:

`a^(m)*a^(n) =a^(m+n)\\\\(a^(m))/(a^(n))=a^(m-n)\\\\(a^(m))^(n)=a^(m*n)`

4) √16 = 8 is wrong.

Because, √16 =
`√(2*2*2*2)=2*2=4`